Gaelic Coat of Arms / Family Crest

CAOMHANACH = KAVANAGH = WEXFORD AND CARLOW = DESCENDED FROM THE DONAL MACMURROUGH

CHENNSELAIG OR CINNSEALACH = KINSELLA = COUNTY OF WEXFORD = SEE MACMURROUGH

CONCHOBHAIR = O’ CONNOR = COUNTY OF OFFALY = DESCENDED FROM THE CATHAOIR MOR

CRAOBHACH = CREAGH = COUNTY OF CLARE = BRANCHED FROM THE O'NEILLS OF CLARE

KILRONAN

MAC AMHALGHAIDH = MACAULEY OR MACAWLEY = COUNTY OF OFFALY \ W.MEATH, LORDS OF THE CALRY

MAC AMHLAOIBH = MACAULEY OR MACAWLEY = COUNTY OF FERMANAGH = BRANCHED FROM THE MAGUIRE

MAC AMHLAOIBH = MACAULIFFE = COUNTY OF CORK = BRANCHED FROM THE MACCARTHY

MAC AN AIRCHINNIGH = MACINERNEY = COUNTY OF CLARE = SON OF THE ERENAGH

MAC AN AIRCHINNIGH = NERNEY = COUNTY OF ROSCOMMON = SON OF THE ERENAGH

MAC AN BHAIRD = MAC WARD = COUNTY OF DONEGAL AND GALWAY

MAC AN BHREITHEAMHAN = MAC ABRAHAM, ABREHAN, JUDGE = COUNTY OF CORK MAC AN BHREITHEAMHNAIGH = MAC BREHENY, JUDGE = COUNTY OF SLIGO \ N. ROSCOMMON

MAC AN CHOILGH = MACQUILLY OR COX = COUNTY OF ROSCOMMON

MAC AN FHAILGHIGH = NALLY OR MACNALLY = COUNTY OF ROSCOMMON AND MAYO = NORMAN ORIGIN

MAC AN FHILIDH = MAC NEILLY, NEELY = COUNTY OF ANTRIM

MAC AN GHIRR = SHORT, SHORTMAN OR SHORTEL = UNKNOWN

MAC AN TSAOIR = MACATEER = COUNTY OF ULSTER MAC ANNA OR CANNA= MACCANN = COUNTY OF ARMAGH = LORDS OF THE CLANBRASSIL {CENEL EOGHAIN}

MAC AODHA OR AOIDHE = MACHUGH = COUNTY OF FERMANAGH

MAC AODHA OR AOIDHE = MACHUGH = N. GALWAY

MAC AODHA OR AOIDHE = MACHUGH = W. GALWAY = BRANCHED FROM THE O'FLAHERTYS

MAC AODHAGAIN = MAC EGAN = UI MAINE TERRITORY, THEN ORMOND

MAC AONGHASA = MACNIECE = COUNTY OF ANTRIM

MAC AONGHASA OR OENGUSSA = MAC GUINNESS OR MAGENNIS = COUNTY OF DOWN = THE DAL ARAIDHE

MAC ARDGHAIL = MACARDLE = COUNTY OF MONAGHAN, ARMAGH AND LOUTH OF ORIELL

MAC ARTIAN = MACCARTAN = COUNTY OF DOWN = CHIEFS OF THE KINELARTY

MAC BHLOSCAIDH = MCCLUSKEY = COUNTY OF DERRY = A BRANCHED FROM THE O'CAHANS

MAC BRADAIGH = BRADY = COUNTY OF CAVAN

MAC BRANAIN = MACBRENNAN = COUNTY OF ROSCOMMON = CHIEFS OF THE CORCA ACHLANN

MAC BRAOIN = MAC BREEN = OSSORY, COUNTY OF KILKENNY

MAC CAGADHAIN = COGAN = COUNTY OF LEITRIM

MAC CAILEIN = CAMPBELL = COUNTY OF DONEGAL = SCOTTISH GALLOWGLASS OF CENEL EOGHAIN

MAC CANANN = MAC CONNON = COUNTY OF MONAGHAN

MAC CARRGHAMHNA = GAFFNEY OR MACCARON = COUNTY OF CAVAN AND ALSO ROSCOMMON

MAC CARRGHAMHNA. LATER O’ GRAMHNA = O’ GROWNEY = COUNTY OF TIPPERARY

MAC CARTHAIGH = MACCARTHY = MUNSTER {TIPPERARY} = THE EOGHANACHT

MAC CATHASAIGH = MACCASEY OR CASEY = COUNTY OF LOUTH \ MONAGHAN

MAC CATHMHAOIL = CAMPBELL = COUNTY OF TYRONE = CENEL FEARADHAIGH THEAS OF CENEL EOGHAIN

MAC CEARBHAILL = MAC CARROLL OR MACCARVILL = COUNTY OF ULSTER

MAC CEARNAIGH = KEARNEY = COUNTY OF ULSTER = CENEL EOGHAIN

MAC CEARNAIGH = MAC CARNEY OR KEARNEY = COUNTY OF MEATH AND MONAGHAN \ ARMAGH

MAC CÉILE = MACHALE = COUNTY OF MAYO = ALSO OF WELSH ORIGIN

MAC CIONATH = MACKENNA = COUNTY OF MEATH AND MONAGHAN = S.ERN UI NEILL

MAC CLUIN = MAC CLUNE = COUNTY OF CLARE

MAC COCHLAIN = MAC COUGHLAN = COUNTY OF OFFALY = DAL GCAIS, CHIEF OF DELVIN MACCOUGHLAN

MAC COIBHEANAIGH = COVENEY = COUNTY OF KILKENNY {OSSORY} = IN CRANNAGH BARONY

MAC COININ = MAC CUNNEEN = COUNTY OF MAYO

MAC COLGHAIN = {KIL} OR MAC COLGAN = COUNTY OF OFFALY = SAME STOCK AS O'DEMPSEY AND O'DUNNE

MAC CON ULADH = MACNALLY OR MACANALLY = COUNTY OF ARMAGH AND MONAGHAN {S. E. ULAID}

MAC CONBOIRNE = BURNS = N. CONNAUGHT = MAINLY OF SCOTTISH ORIGIN

MAC CONCHRADHA = MACENCHROE OR CROWE = COUNTY OF CLARE

MAC CONCHRUACHAN = MACCROGHAN = COUNTY OF ROSCOMMON

MAC CONGAIL = CONWELL OR MACCONWELL = COUNTY OF DOWN

MAC CONGAIL = MACGONIGLE = COUNTY OF DONEGAL

MAC CONGHAMHMA = GAFFNEY OR CAULFIELD = S GALWAY = UI FIACHRACH AIDHNE

MAC CONMARA = MACNAMARA = COUNTY OF CLARE = THE DAL GCAIS, RULERS OF CLANCULLEN

MAC CONMHAOIL = MACCONVILLE OR CONWELL = COUNTY OF ARMAGH {ORIEL}

MAC CONMIDHE = MAC CONWAY OR MACNAMEE = COUNTY OF DERRY AND TYRONE

MAC CONMIDHE = MACNAMEE OR CONWAY = COUNTY OF DERRY AND TYRONE

MAC CONNMHAIGH OR CONNMEADHA = MAC CONWAY = THOMOND

MAC CONRAOI = MAC CONROY OR KING = COUNTY OF GALWAY = LORD OF THE DELVIN OF THE TWO LAKES

MAC CONSAIDIN = MACCONSIDINE = COUNTY OF CLARE = DAL GCAIS, A BRANCHED FROM THE O'BRIEN

MAC CONSHNAMHA = FORDE OR MACKINNAWE = COUNTY OF LEITRIM = CHIEFS OF THE MUINTIR KENNY

MAC CORCRAIN = MAC CORCORAN = COUNTY OF OFFALY \ TIPPERARY, CHIEF OF CLAN RUAINNI

MAC CORMAC = MACCORMACK = VARIOUS

MAC COSRAIGH = MACCUSKER = COUNTY OF TYRONE = ERNAGHS OF CLONES

MAC CRIOMHTHAINN = MACCROHAN = COUNTY OF KERRY

MAC CUILLE OR MAC GIOLLA CHUILLE = COOLEY = CONNACHT, ROSCOMMON, CLARE, GALWAY.

MAC CUINDLIS = MACCANDLESS = COUNTY OF DOWN

MAC CURTAIN = MAC CURTIN = COUNTY OF CLARE

MAC DHOMHNAILL = CONNELL AND MACCONNELL = COUNTY OF ULSTER = THE CLAN MACDONALD

MAC DIARMADA = MACDERMOT = COUNTY OF ROSCOMMON \ SLIGO = OF MAG LUIRG {MOYLURG}

MAC DOMHNAILL = MACDONNELL = CLARE \ LIMERICK {THOMOND}

MAC DOMHNAILL = MACDONNELL = COUNTY OF ANTRIM = OF CLAN MACDONALD {SCOTCH=IRISH}

MAC DOMHNAILL = MACDONNELL = COUNTY OF FERMANAGH = OF CLANKELLY

MAC DONNCHADHA = MACDONAGH = COUNTY OF CORK = LORDS OF THE DUHALLOW, BRANCHED FROM THE MACCARTHY

MAC DONNCHADHA = MACDONAGH = COUNTY OF SLIGO = LORDS OF THE CORRAN, A MACDERMOT BRANCH

MAC DUINNSHLÉIBHE = MAC DONLEVY OR DUNLEAVY = COUNTY OF DOWN {ULIDIA}

MAC EINRI = HENRY = N. ANTHRIM \ DERRY

MAC EOCHAIDH = KEOGH = N. KILDARE = SAME STOCK AS THE O'BYRNES

MAC EOCHAIDH = KEOGH = S. ROSCOMMON = THE UI MHAINE, LORDS OF THE MAGH FINN

MAC EOCHAIDH = MAC KEOGH = W. TIPPERARY

MAC EOGHAIN = MACKEON = COUNTY OF SLIGO \ LEITRIM

MAC FHIODHBHUIDHE = MACEVOY = COUNTY OF W.MEATH, LAOIS = ONE OF THE "7 SEPTS OF LEIX"

MAC FHLANNCHAIDH = MAC CLANCY = COUNTY OF CLARE = DAL GCAIS, BRANCHED FROM THE MACNAMARA

MAC FHLANNCHAIDH = MAC CLANCY = COUNTY OF LEITRIM = CHIEF OF DARTRY {ROSCLOGHER}

MAC FIONBHAIR = FINNEVAR = COUNTY OF LEITRIM = CHIEFS OF THE MUINTIR GREADAIN

MAC GABHANN = MACGOWAN OR SMITH = COUNTY OF CAVAN

MAC GABHANN = SMITH OR MACGOWAN = COUNTY OF CAVAN

MAC GAFRAIDH = MAC CAFFREY = COUNTY OF TYRONE \ FERMANAGH = BRANCHED FROM THE MAGUIRES

MAC GAIRBHIN = MAC GARVEY = COUNTY OF DONEGAL

MAC GIOLLA BHAIN = MACILWAINE OR KILBANE = COUNTY OF SLIGO = THE UI FIACHRACH

MAC GIOLLA BHRIDE = MACBRIDE OR KILBRIDE = COUNTY OF DONEGAL

MAC GIOLLA CHOMHGAILL = MAC COOL = DONEGAL

MAC GIOLLA CHOMHGAILL = MACILHOYLE OR COYLE = DONEGAL

MAC GIOLLA DOMHAIGH = MACELDOWNEY = COUNTY OF DERRY

MAC GIOLLA LAOIRE = MAC CALLERY, COLLEARY, COLLARY = COUNTY OF SLIGO & N. CONNACHT

MAC GIOLLA MHARTAIN = MARTIN OR GILMARTIN = COUNTY OF TYRONE = UI NEILL

MAC GIOLLA MHIN = MACLIVEEN = S. DOWN

MAC GIOLLA MO=CHOLMOG = FITZ DERMOT = UI DUNCHADA OF DUBLIN \ KILDARE

MAC GIOLLA MOCHUDA = MACGILLYCUDDY = COUNTY OF KERRY = AND O'SULLIVAN MÓR BRANCH

MAC GIOLLA NA NAOMH = FORD = S. CONNACHT

MAC GIOLLA PHADRAIG = FITZPATRICK = LORDS OF THE UPPER OSSORY {LAOIS \ KILKENNY}

MAC GIOLLA PHÓIL = MACGILFOYLE OR POWELL = COUNTY OF OFFALY

MAC GIOLLA RIABHAIGH = GALLERY, MACAREAVY, GRAY = COUNTY OF CLARE & ELSEWHERE

MAC GIOLLA RIABHAIGH = MACILREA, KILREA = COUNTY OF SLIGO & ELSEWHERE

MAC GIOLLA RIABHAIGH = MACILWRAITH = SCOTTISH

MAC GIOLLA RUA = KILROY, GILROY = COUNTY OF CLARE & ELSEWHERE

MAC GIOLLA RUA = MAC ELROY = COUNTY OF FERMANAGH

MAC GIOLLA RUADH = MACILROY, MCELROY, MACGILROY, KILROY = VARIOUS

MAC GIOLLA T=SEANAIN = O’ SHANNON = COUNTY OF CLARE = SON OF THE FOLLOWER OF ST. SENAN

MAC GLAISIN AND MAC GIOLLA GHLAIS = GREENE OR GREEN = COUNTY OF ULSTER

MAC INNEIRGHE = MACENERY = COUNTY OF LIMERICK = UI CAIRBRE, SAME STOCK AS O'DONOVAN

MAC LOCHLAINN = MACLAUGHLIN = COUNTY OF DONEGAL {INISHOWEN} = THE N.ERN UI NEILL

MAC LOCHLAINN = MACLOUGHLIN = COUNTY OF DONEGAL = N.ERN UI NEILL

MAC MAGHNAIS = MACMANUS = COUNTY OF FERMANAGH = FROM MAGHNUIS MAGUIRE, SON OF DONN MOR

MAC MAGHNAIS = MACMANUS = COUNTY OF ROSCOMMON = FROM MAGHNAIS, SON OF TURLOUGH O'CONNOR

MAC MAOLRUANAIDH = MACAROONEY = COUNTY OF FERMANAGH

MAC MATHGHAMHA = MACMAHON = COUNTY OF CLARE = THE DAL GCAIS, DESCENDED FROM THE MAHON O'BRIEN

MAC MATHGHAMHA = MACMAHON = COUNTY OF MONAGHAN = RULERS OF ORIEL {AIRGIALLA}

MAC MUIREACHAIDH = MACMURRY OR MACMORROW = COUNTY OF LEITRIM

MAC MURCHADA = MACMURROUGH = COUNTY OF WEXFORD {HY CHENNSELAIG} = DESCENDANT OF MURCHADH

MAC OISTOGHIN = MAC COSTIGAN = COUNTY OF LAOIS = A BRANCHED FROM THE FITZPATRICK

MAC OITIR = MAC COTTER = COUNTY OF CORK

MAC OR MAG AODHA = MAGEE = W. AND E. COUNTY OF ULSTER {RESPECTIVELY}

MAC PHAIDIN = PATTERSON = COUNTY OF ULSTER {AND SCOTLAND}

MAC RAGHNAILL = MACRANNALL OR REYNOLDS = COUNTY OF LEITRIM = LORDS OF THE MUINTIR EOLAIS

MAC RAITH = MACGRATH = COUNTY OF CLARE

MAC RAITH = MACGRATH = COUNTY OF DONEGAL \ FERMANAGH

MAC RUAIDHRI = MACRORY OR MACCRORY = COUNTY OF TYRONE

MAC RUIDHRI = MACCRARY OR MACCREARY = UNKNOWN = VARIANT OF MACRORY?

MAC SCANNLAIN = MAC SCANLAN = LOUTH {ORIEL}

MAC SEANLAOICH = MAC SHANLY = COUNTY OF LEITRIM = MACSHANLY OF DROMOD

MAC SEARRAIGH = MACSHARRY OR FOLEY = BREIFNE, E.G. N.ERN LEITRIM, SLIGO

MAC SUIBHNE = SWEENEY OR MACSWEENY = COUNTY OF DONEGAL = DESCENDED FROM THE SCOTTISH CHIEF IN ARGYLE

MAC TIGHEARNAIN = MAC TIERNAN = COUNTY OF ROSCOMMON = DESCENDED FROM THE O'CONNOR

MAC TIGHEARNAIN = MAC TIERNAN OR KIERNAN = COUNTY OF CAVAN = CHIEFS OF THE TEALLACH DONNCHADHA

MAC TOIRDHEALBHAIGH = MACCURLEY, CURLEY OR TERRY = CONNACHT

MACDAIL RE DEACHAIR = MAC DOCKERY = COUNTY OF ROSCOMMON = CLAN DAIL RE DEACAIR {SIL MURRAY}

MACGIOLLARNATH = FORD = S.ERN CONNEMARA

MACMEANMAN =MACMENAMIN = COUNTY OF DONEGAL \ TYRONE = CENÉL CONAILL

MAG AODHA = MACGEE = ALSO OF SCOTTISH EXTRACTION, WITH IRISH ORIGINS

MAG AODHA = MACGEE = COUNTY OF W.MEATH = OF MUINTIR TLAMAIN

MAG AODHA = MACGEE = DONEGAL \ TYRONE BORDER

MAG AONGHUSA = MAGENNIS OR MAC GUINNESS = COUNTY OF DOWN = THE DAL ARAIDHE, LORDS OF THE IVEAGH

MAG EOCHAGAIN = MAC GEOGHEGAN = COUNTY OF W.MEATH = SO. UI NEILL, CHIEFS OF THE KINALEA

MAG FHEARADHAIGH = MAC GARRY = COUNTY OF ROSCOMMON \ LEITRIM

MAG FHIONNAIN = MAC GANNON = COUNTY OF MAYO

MAG FHLOINN = MACGLINN = ROSCOMMON \ W.MEATH

MAG OIREACHTAIGH = MAC GERAGHTY = COUNTY OF ROSCOMMON \ GALWAY = UI BRIUIN AI {IN UI MAINE}

MAG SHAMHRADHAIN = MACGOVERN \ MAGAURAN = COUNTY OF CAVAN = DESCENDED FROM THE EOCHAIDH {O'ROURKE}

MAG UIDHIR = MACGUIRE OR MAGUIRE = COUNTY OF FERMANAGH = RULERS OF FERMANAGH

MAG UIDHIR = MAGUIRE = COUNTY OF FERMANAGH = RULERS OF FERMANAGH

MAGUIGINN OR MACGUAGAIN = MACGUIGAN = COUNTY OF TYRONE = CENEL EOGHAIN

MAOILCHIARAIN = MULKERRIN, MULKIERAN = ROSCOMMON, GALWAY, COUNTY OF ULSTER = DEVOTEE OF {ST.} CIARAN

Ó‘MAOLDORAIDH = O'MULDORY = DONEGAL = TIRCONNEL {MACALINIONS}

O’ AN CHAINTIGH = O’ CANTY = W. COUNTY OF CORK

O’ BANAIN = O’ BANNION = COUNTY OF FERMANAGH

O’ BAOGHILL = O’ BOYLE = COUNTY OF DONEGAL

O’ BAOIGHEALLAIN = O’ BOYLAN = FERMANAGH \ MONAGHAN = SAME STOCK AS O'FLANAGANS

O’ BEAGLAOICH = BEGLEY = COUNTY OF DONEGAL

O’ BEOLLAIN = O’ BOLAND = COUNTY OF CLARE = DALCASSIAN

O’ BEOLLAIN = O’ BOLAND = COUNTY OF SLIGO = UI FIACHRACH

O’ BIRN = O’ BEIRNE = COUNTY OF ROSCOMMON = CHIEFS OF THE TIR BRIUIN

O’ BOGAIGH = BUGGY = COUNTY OF KILKENNY \ WEXFORD {ORIGIN UNKNOWN}

O’ BRAOIN = O’ BREEN = W.MEATH \ OFFALY = LORD OF THE BRAWNEY

O’ BRAONAIN = O’ BRENNAN = COUNTY OF KILKENNY, E. GALWAY, W.MEATH AND KERRY

O’ BREISLEIN = O’ BRESLIN = COUNTY OF DONEGAL, CENEL ENDA, CHIEFS OF THE FANAD

O’ BRIAIN = O'BRIEN = MUNSTER {THOMOND} = THE UI TOIRDEALBHAIGH, PART OF THE DAL GCAIS

O’ BRIC = O’ BRICK = COUNTY OF WATERFORD = OF THE DECIES

O’ BRÓGAIN = O’ BROGAN = COUNTY OF MAYO = THE UI FIACHRACH

O’ BROIN = O’ BYRNE, BURNS = COUNTY OF KILDARE \ WICKLOW = UI BROIN SEPT OF CRIOCH BRANACH

O’ BRÓITHE = O’ BROPHY = COUNTY OF KILKENNY, LAOIS

O’ BROLAIGH = O’ BROLLY, BRALLY, BRAWLEY = COUNTY OF DONEGAL \ DERRY = CINEL OENGHUSA

O’ BROLLACHAIN = O’ BRALLAGHAN OR BRADLEY = COUNTY OF TYRONE \ DERRY = CINEL FERADAIGH

O’ BROSNACHAIN = O’ BROSNAN = COUNTY OF KERRY

O’ BRUADIAR = O’ BRODER OR BRODERICK = COUNTY OF CORK, LIMERICK AND GALWAY

O’ BRUIC = O’ BRICK = COUNTY OF KERRY = ORIGINALLY OF THOMOND

O’ BUACHALLA = BUCKLEY = COUNTY OF TIPPERARY \ OFFALY

O’ CADHAIN = COYNE, KYNE OR COEN = COUNTY OF MAYO = THE UI FIACHRACH

O’ CADHLA = KIELY = COUNTY OF CLARE \ LIMERICK = THE DAL GCAIS

O’ CADHLA = O’ KEALY OR KELLY = COUNTY OF GALWAY = CHIEFS OF THE CONNEMARA

O’ CAELLAIGHE = O’ KELLY = OSSORY, KILKENNY \ LAOIS BORDER

O’ CAIRBRE = O’ CARBERY = COUNTY OF W.MEATH = CHIEFS IN CLONLONAN

O’ CAIREALLAIN = O’ CAROLAN = COUNTY OF DERRY = CHIEF OF CLAN DIARMADA

O’ CAIRRE = O’ CARR AND O’ CARRY = VARIOUS, E.G. OF CENEL AENGUSA

O’ CAISIDE = CASSIDY = COUNTY OF FERMANAGH

O’ CAITHNIADH = O’ CANNY = COUNTY OF MAYO = UI FIACHRACH MUAIDHE, CHIEFS OF THE ERRIS

O’ CANAIN = O’ CANNON = COUNTY OF GALWAY = THE UI MAINE, SAME STOCK AS O'MADDEN

O’ CANANNAIN = O’ CANNON = COUNTY OF DONEGAL = KINGS OF CINEL CONAILL {PRE=1200}

O’ CAOIMH OR CAIM = O'KEEFE = COUNTY OF CORK = DESCENDED FROM THE ART, KING OF MUNSTER {742=762}

O’ CAOINDEALBHAIN = O’ CONLAN, QUINLAN = COUNTY OF MEATH, PRINCES OF UI LAEGHARI

O’ CAOINDEALBHAIN = O’ QUINLAN OR KINDELLAN = COUNTY OF MEATH = S.ERN UI NEILL

O’ CAOINNIGH = O’ KENNY OR KEENEY = COUNTY OF LEITRIM \ DONEGAL = LORDS OF THE MUINTER KENNY

O’ CAOLLAIDHE = O’ KEALY = OF UI BERCHAIN, COUNTY OF KILKENNY

O’ CAOLLAIDHE = O’ KEALY OR KELLY = OF UI BUIDE, COUNTY OF LAOIS

O’ CAOMHAIN = O’ KEEVAN OR KAVANAGH = COUNTY OF SLIGO = UI FIACHRACH

O’ CATHAIL = O’ CAHILL = COUNTY OF GALWAY = CHIEF OF KINELEA

O’ CATHAIL = O’ CAHILL = COUNTY OF KERRY AND ALSO IN TIPPERARY

O’ CATHAIN = KANE OR O'CAHAN = E. DONEGAL \ DERRY = CENEL EOGHAIN

O’ CATHAIN = KEANE = COUNTY OF GALWAY {THOMOND} = UI FIACHRA AIDNE

O’ CATHAIN = O'CAHAN OR KANE = E. DONEGAL = CENEL EOGHAIN

O’ CATHALAIN = O’ CALLAN = COUNTY OF MONAGHAN \ LOUTH = NAMED FROM A KING OF FERNMAG.

O’ CATHALAIN = O’ CULHANE OR CAHALANE = COUNTY OF LIMERICK = CHIEFS OF THE OWNEY BEG

O’ CATHARNAIGH = KEARNEY = COUNTY OF MEATH & OFFALY = CHIEFS OF THE TEFFIA

O’ CATHASAIGH = O’ CASEY = VARIOUS, INCLUDING LORDS OF THE SUAITHNI {COUNTY OF DUBLIN}

O’ CEALLACHAIN = O’ CALLAGHAN = COUNTY OF CORK = THE EOGHANACHT, DESCENDED FROM THE CEALLACHAN

O’ CEALLAIGH = O’ KELLY = COUNTY OF ANTRIM AND DOWN = CINEL EACHRACH

O’ CEALLAIGH = O’ KELLY = COUNTY OF LAOIS = 7 SEPTS OF LEIX

O’ CEALLAIGH = O’ KELLY = COUNTY OF MEATH = O'KELLYS OF BREAGH

O’ CEALLAIGH = O’ KELLY = E GALWAY & S. ROSCOMMON = UI MAINE {OR HY MANY}

O’ CEANNDUBHAIN = O’ CANAVAN = COUNTY OF GALWAY, PHYSICIANS TO O'FLAHERTY OF CONNEMARA

O’ CEARBHAILL = O’ CARROLL = COUNTY OF KERRY = CHIEF OF LOCHA LEIN

O’ CEARBHAILL = O’ CARROLL = COUNTY OF KILKENNY = CHIEF OF N.ERN GOWRAN

O’ CEARBHAILL = O’ CARROLL = COUNTY OF LEITRIM \ SLIGO = CHIEF OF CALRAIGHE

O’ CEARBHAILL = O’ CARROLL = COUNTY OF MONAGHAN AND LOUTH = CHIEFS OF THE ORIEL

O’ CEARBHAILL = O’ CARROLL = COUNTY OF OFFALY AND TIPPERARY = LORDS OF THE EILE {ELY}

O’ CEARBHALLAIN = O’ CAROLAN = COUNTY OF CAVAN \ MONAGHAN

O’ CEARMADA = O’ CARMODY = E. COUNTY OF CLARE

O’ CEARRNAIGH = KEARNEY = COUNTY OF CLARE = DALCASSIAN

O’ CEARRNAIGH = O’ CARNEY = COUNTY OF MAYO = UI FIACHRACH

O’ CÉILEACHAIR = KELLEHER = COUNTY OF CLARE = THE DAL GCAIS

O’ CEIN = KEAN = COUNTY OF WATERFORD

O’ CÉIRIN = O’ KIERAN OR KEARNS = COUNTY OF MAYO = CHIEFS OF THE COSTELLO

O’ CIABHAIN = O’ KEVANE OR KAVANAGH = COUNTY OF CORK = CORCU LAOIDHE

O’ CIANAIN = O’ KEENAN = COUNTY OF MONAGHAN \ LOUTH {ORIEL}

O’ CIARAIN = KERIN OR CAREY = COUNTY OF CORK \ CLARE

O’ CIARDHA = O’ CAREY = COUNTY OF KILDARE = S.ERN UI NEILL, LORDS OF THE CARBURY

O’ CIARDHA = O’ KEARY = COUNTY OF KILDARE = THE S.ERN UI NEILL, LORDS OF THE CARBURY

O’ CIARDUBHAIN = O’ KIRWAN = COUNTY OF GALWAY = ONE OF THE TRIBES OF GALWAY

O’ CINNÉIDE = KENNEDY = COUNTY OF CLARE \ TIPPERARY = THE DAL GCAIS = LORDS OF THE ORMOND

O’ CINNFHAELIDH = O’ KINNEALY = COUNTY OF LIMERICK

O’ CIONNAOITH = O’ KENNY = COUNTY OF GALWAY \ ROSCOMMON = UI MAINE

O’ CLEIRCHIN = O’ CLERKIN, CLERK, CLEARY = COUNTY OF LIMERICK = UI FIDHGEINTE, UI=CAIRBRE

O’ CLEIREIGH{CLERY} = CLARK{E} = CONNACHT, DONEGAL = CHIEFS OF THE UI FIACHRA FINN

O’ CLÉIRIGH = O’ CLERY OR CLEARY = COUNTY OF GALWAY = TIGHERNEACH UA CLEIRIGH, LORD OF THE AIDHNE

O’ CLÚMHAIN = COLEMAN OR O'COLMAN = COUNTY OF SLIGO \ CORK = DESCENDANT OF CLUMHAN

O’ COBHTHAIGH = O’ COFFEY = COUNTY OF CORK = SAME STOCK AS O'DRISCOLLS

O’ COBHTHAIGH = O’ COFFEY = COUNTY OF ROSCOMMON = UI MAINE BRANCHED FROM THE O'MADDENS

O’ COBHTHAIGH = O’ COFFEY = COUNTY OF W.MEATH

O’ COCHLAIN = O’ COUGHLAN = COUNTY OF CORK

O’ COIGLIGH = QUIGLEY = COUNTY OF MAYO = THE UI FIACHRACH

O’ COILEAIN = COLLINS = COUNTY OF LIMERICK AND LATER W. CORK = LORDS OF THE CONNELLO

O’ COIMIN = O’ CUMMINS, COMMONS = COUNTY OF MAYO

O’ COINGHEALLAIGH = CONNOLLY = W. CORK

O’ COINGHIOLLAIN = CONLON = COUNTY OF SLIGO

O’ COININ = O’ CUNNEEN OR RABBIT = COUNTY OF OFFALY AND OF THOMOND

O’ COINNE OR O’ COINNIGH= KENNY OR MACKENNA = COUNTY OF DOWN

O’ COLGHAIN = O’ OR MAC COLGAN = COUNTY OF DERRY AND ALSO OF COUNTY OF DONEGAL

O’ COLMAIN = COLEMAN = COUNTY OF SLIGO, BARONY OF TIRERAGH = UI FIACHRACH

O’ COMHRAIDHE = O’ CORRY AND CURRY = COUNTY OF CLARE

O’ COMHRAIDHE = O’ CURRY = COUNTY OF W.MEATH = CHIEFS OF THE MOYGOISH

O’ CONAILL = O'CONNELL = COUNTY OF KERRY = CHIEF OF MAGUNIHY

O’ CONBHUIDHE = O’ CONWAY = COUNTY OF SLIGO

O’ CONCHEANNAIN = O’ CONCANNON = COUNTY OF GALWAY = UI MAINE, LORDS OF THE UI DIARMADA

O’ CONGALAIG = O’ CONNOLLY = COUNTY OF DUBLIN \ MEATH

O’ CONGHALAIGH = O’ CONNOLLY = CONNOLLY = COUNTY OF FERMANAGH AND MONAGHAN

O’ CONNAGAIN AND MAC CUINNEAGAIN = CUNNINGHAM = COUNTY OF SLIGO = UI FIACHRA

O’ CONNAGAIN AND MAC CUINNEAGAIN = CUNNINGHAM = GALWAY \ ROSCOMMON = UI MAINE

O’ CONNALLAIN = CONLON, CONLAN OR CONNELLAN = COUNTY OF GALWAY AND ROSCOMMON

O’ CONNMHACHAIN = O’ CONWAY = COUNTY OF MAYO = SAME STOCK AS O'HARA

O’ CONRAOI = O’ CONRY OR CONROY = COUNTY OF ROSCOMMON \ GALWAY = UI MAINE

O’ CORCRAIN = O’ CORCORAN = COUNTY OF FERMANAGH

O’ CORRAGAIN = O’ CORRIGAN = COUNTY OF FERMANAGH = SAME STOCK AS MAGUIRE

O’ CORRAIDH OR O’ CORRA = O’ CORR OR CORRY = COUNTY OF TYRONE=FERMANAGH

O’ CORRAIDHIN = O’ CURREEN OR CURREN = COUNTY OF LEITRIM

O’ COSRAIGH = O’ COSGRAVE = COUNTY OF GALWAY = UI MAINE

O’ COSRAIGH = O’ COSGRAVE = COUNTY OF MONAGHAN = CHIEFS OF THE FIR ROIS

O’ COSRAIGH = O’ COSGRAVE = COUNTY OF WICKLOW, LATER WEXFORD

O’ CREACHAIN = O’ CREHAN = COUNTY OF MAYO = THE UI FIACHRACH

O’ CRIOCHAIN = O’ CREHAN OR CREIGHTON = COUNTY OF TYRONE= AN ORIEL SEPT

O’ CROIDHEAIN = O’ CREAN = COUNTY OF DONEGAL \ SLIGO = CENEL EOGHAIN

O’ CROININ = CRONIN = COUNTY OF CORK

O’ CRUADHLAOICH = CROWLEY = CARBERY, COUNTY OF CORK = UI BRIUIN AI

O’ CUAGAIN = COOGAN = GALWAY \ ROSCOMMON = THE UI MAINE

O’ CUANA = COONEY = COUNTY OF TYRONE, THEN N. CONACHT

O’ CUIDIGHTHIGH = CUDDIHY = COUNTY OF CORK AND TIPPERARY

O’ CUILEANNAIN = O’ CULLINAN OR CULLEN = COUNTY OF DONEGAL = OF MULLINASHEE

O’ CUILEANNAIN = O’ CULLINANE = COUNTY OF CORK = CORCU LIADHE

O’ CUILINN = O’ CULLEN = COUNTY OF WEXFORD AND WICKLOW

O’ CUILL = O’ QUILL = COUNTY OF CORK AND KERRY

O’ CUILLEAIN = COLLINS = W. CORK = CORCA LAOIDHE

O’ CUINN = O’ QUINN = COUNTY OF ANTRIM = THE GLENS OF ANTRIM

O’ CUINN = O’ QUINN = COUNTY OF CLARE {THOMOND} = THE DAL GCAIS

O’ CUINN = O’ QUINN = COUNTY OF LONGFORD = SAME STOCK AS O'FERRALLS OF ANNALY

O’ CUINN = O’ QUINN = COUNTY OF TYRONE = CENEL EOGHAIN

O’ CUIRC = O’ QUIRKE = COUNTY OF TIPPERARY = CHIEFS OF THE MUSCRAIGHE CUIRC

O’ CULACHAIN = COOLIHAN OR O'CUOLIHAN = COUNTY OF MAYO = THE UI FIACHRACH

O’ CURRAIN = O’ CURRAN = SW CONNACHT = UI MAINE

O’ DAIMHIN = O’ DEVINE = COUNTY OF FERMANAGH = LORD OF THE TIRKENNEDY

O’ DALAIGH = O’ DALY = COUNTY OF W.MEATH = UI MAINE BRANCHED FROM THE S.ERN UI NEILL

O’ DEAGHAIDH = O’ DEA = COUNTY OF CLARE = OF INCHIQUIN

O’ DEARGAIN = O’ DORGAN = COUNTY OF CORK

O’ DEORAIN OR O’ DEORADHAIN = O’ DORAN = COUNTY OF LAOIS = 7 SEPTS OF LEIX

O’ DIOMASAIGH OR DIMMUSSAIG = O’ DEMPSEY = CLANMALIER BETWEEN COUNTY OF LAOIS AND OFFALY

O’ DIUBHAIN = DUANE OR DEVANE = COUNTY OF GALWAY = ERENAGHS OF KILLURSA

O’ DIUBHAIN = DWANE, DEVANE OR DUANE = COUNTY OF CORK = CORCU LAIODHE

O’ DIUBHAIN = DWANE, DEVANE OR DUANE = COUNTY OF MEATH = OF KNOWTH

O’ DIUBHGEANNAIN = O’ DUIGENAN, DEIGNAN, DIGNAM, ... = COUNTY OF ROSCOMMON, LEITRIM = ERENAGHS OF O’ DOCHARTAIGH = DOHERTY OR DOUGHERTY = COUNTY OF DONEGAL = CENEL CONAILL, LORDS OF THE INISHOWEN

O’ DOIBHILIN = O’ DEVLIN = COUNTY OF SLIGO = CHIEFS IN CORRAN, STANDARD BEARER TO O'CONNOR

O’ DOIBHILIN = O’ DEVLIN = COUNTY OF TYRONE AND SLIGO = LORDS OF THE MUINTER DEVLIN, CENEL EOGHAIN

O’ DOINN OR DUINN = O’ DUNN OR DUNNE = COUNTY OF LAOIS = LORDS OF THE IREGAN

O’ DOMHNAILL = O'DONNELL = COUNTY OF DONEGAL = THE N.ERN UI NEILL

O’ DOMHNAILL = O'DONNELL = W. CLARE AND E. GALWAY = THE UI MAINE

O’ DOMHNALLAIN = DONLAN = S. GALWAY = THE UI MAINE

O’ DOMHNALLAIN = O'DONNELLAN = COUNTY OF GALWAY = THE UI MAINE, LORD OF THE CLAN BREASAIL

O’ DONNAGAIN = O’ DONEGAN = COUNTY OF CORK = OF MUSCRAIGE TRI MAIGHE

O’ DONNAGAIN = O’ DONEGAN = COUNTY OF W.MEATH = OF CRIOCH DUNGAN

O’ DONNCHADHA = O’ DONOGHUE MÓR = COUNTY OF CORK, KERRY = EOGHANACHT LOCHA LEIN

O’ DONNCHADHA = O’ DONOGHUE OF THE GLEN = COUNTY OF CORK. KERRY = THE EOGHANACHT

O’ DONNCHADHA = O’ DONOHOE = GALWAY, CAVAN AND VARIOUS

O’ DONNCHADHA = O’ DUNPHY = COUNTY OF KILKENNY = OF IVERK BARONY

O’ DONNDUBHAIN = O’ DONOVAN = COUNTY OF LIMERICK, THEN SW CORK = CHIEFS OF THE CARBERRY

O’ DONNGHAILE = DONNELLY = COUNTY OF DONEGAL. LATER TYRONE = CINEL EOGHAIN

O’ DORCHAIDHE = O’ DARCY = COUNTY OF MAYO AND GALWAY = ALSO OF NORMAN ORIGIN

O’ DUACHAIN = O’ DOOHAN = COUNTY OF DONEGAL

O’ DUBHAGAIN = O’ DUGGAN = COUNTY OF GALWAY = IN THE TERRITORY OF THE UI MAINE

O’ DUBHAGAIN = O’ DUGGAN = N. CORK = FIR MAIGHE

O’ DUBHCHONNA = DOHENY OR DOWNEY = COUNTY OF CORK = THE CORCU LAOIDHE

O’ DUBHDA = O’ DOWD = COUNTY OF MAYO AND W. SLIGO = UI FIACHRACH MUAIDE

O’ DUBHGHAILL = DOYLE = COUNTY OF CARLOW, WEXFORD AND WICKLOW

O’ DUBHHLAIN OR DOBHAILEN = DOLAN = S. ROSCOMMON AND E. GALWAY = THE UI MAINE

O’ DUBHSHLAINTE = O’ DELANY = COUNTY OF LAOIS

O’ DUBHTHAIGH = O’ DUFFY = SEPTS FROM COUNTY OF DONEGAL, ROSCOMMON AND MONAGHAN

O’ DUBHUIDHE = O’ DEVOY OR DEEVY = COUNTY OF LAOIS = 7 SEPTS OF LEIX, LORD OF THE CREMTHAINN

O’ DUDBHCHON = O’ DOUGHAN = COUNTY OF CORK = CORCU LAOIDHE SEPT

O’ DUIBHDABHOIREANN = O’ DAVOREN = COUNTY OF CLARE

O’ DUIBHDIORMA = O’ DERMOND, DERMOTT, DARBY = CHIEFS OF THE BREADACH IN INISHOWEN

O’ DUIBHEAMHNA = O’ DEVANY = COUNTY OF ARMAGH \ DOWN = ANCIENT CHIEFS OF THE UI BREASAIL

O’ DUIBHGHIOLLA = O’ DEVILLY = COUNTY OF GALWAY = THE SIOL ANMCHADHA

O’ DUIBHGHIOLLA = O’ DEVILLY = COUNTY OF GALWAY = THE UI FIACHRACH AIDNE

O’ DUIBHIR OR O’ DUBHUIDHIR = O’ DWYER = W. TIPPERARY = OF KILNAMANAGH

O’ DUIGHLAICH = O’ DOOLEY = COUNTY OF W.MEATH, THEN NE TIPPERARY = LORDS OF THE FERTULLAGH

O’ DUILLEAIN = DILLON = COUNTY OF W.MEATH, LONGFORD AND MAYO = NORMAN ORIGIN

O’ DUINEACHDHA = O’ DENNEHY OR DENNY = COUNTY OF CORK

O’ DUINNIN = O’ DINNEEN, DINAN = COUNTY OF CORK = THE CORCU LAIODHE

O’ DULCHAOINTIGH = O’ DELAHUNTY = COUNTY OF TIPPERARY \ KILKENNY

O’ DÚNADHAIGH = O’ DOWNEY = CORK \ KERRY \ LIMERICK BORDER = OF LUACHAIR

O’ DÚNADHAIGH = O’ DOWNEY = COUNTY OF GALWAY = LORDS OF THE SIL ANMCHADHA

O’ DUNLAING = O’ DOWLING = COUNTY OF LAOIS = 7 SEPTS OF LEIX

O’ FAILBHE = O’ FALVEY = COUNTY OF KERRY = THE CORCA DUIBHNE

O’ FAIRCHEALLAIGH = O’ FARRELLY OR FARLEY = COUNTY OF CAVAN \ MEATH

O’ FALLAMHAIN = O’ FALLON = COUNTY OF MEATH = OF CRICH NA CETACH

O’ FALLAMHAIN = O’ FALLON = COUNTY OF ROSCOMMON = SEPT OF THE UI MAINE {CLANN UDACH}

O’ FAOLAIN = WHELAN OR PHELAN = COUNTY OF WATERFORD = RULERS OF THE DECIES O’ FAOLAIN= PHELAN OR WHELAN = COUNTY OF WATERFORD = RULERS OF THE DECIES

O’ FARACHAIN = O’ FARREN = COUNTY OF DONEGAL = LORD OF THE FINROSS

O’ FATHAIGH = FAHY = COUNTY OF GALWAY = UI MAINE, OF POBAL MUINTIR UI FHATHAIGH

O’ FEARADHAIGH = O’ FERRY, FARRY = COUNTY OF DONEGAL = CENÉL CONAILL

O’ FEARAIN = O’ FEARON = COUNTY OF ARMAGH {ORIEL} = THE CENÉL EOGHAIN

O’ FHEARGHAILL OR FERGAIL = O’ FARRELL = COUNTY OF LONGFORD = LORDS OF THE ANNALY

O’ FHLOINN = O’ LYNN = COUNTY OF ARMAGH = CLANNA RURY, DESCENDED FROM THE COLL UAIS

O’ FHÓGARTAIGH= FOGARTY = COUNTY OF TIPPERARY, ELIOGARTY = DALCASSIAN

O’ FIACHNA = = O’ FEIGHNEY, FEEHENY, HUNT = COUNTY OF ROSCOMMON \ SLIGO = OF SIOL MUIREADHAIGH

O’ FIACHRA = = O’ FEIGHRY, FEEHERY, HUNT = COUNTY OF TYRONE

O’ FIANGUSA = O’ FENNESSY = COUNTY OF TIPPERARY \ WATERFORD = CHIEFS OF THE A DISTRICT NEAR CASHEL

O’ FIANNAIDHE = O’ FEENEY = COUNTY OF SLIGO \ MAYO = SEPT OF THE UI FIACHRACH

O’ FIDHNE = O’ FEENEY = COUNTY OF GALWAY \ ROSCOMMON

O’ FINNTIGHEARN = FINNERAN = COUNTY OF W.MEATH? = CHIEFS OF THE UI MELLA

O’ FIONN = O’ FINN = COUNTY OF GALWAY = ERENAGHS OF KILCOLGAN

O’ FIONN = O’ FINN = COUNTY OF MONAGHAN = OF FIR ROIS

O’ FIONN = O’ FINN = COUNTY OF SLIGO = CHIEFS OF THE CALRY

O’ FIONNACHTA = O’ FINAGHTY, FINERTY = COUNTY OF GALWAY \ ROSCOMMON = UI MAINE CHIEFS OF THE CLANCONWAY

O’ FIONNACHTA = O’ FINAGHTY, FINERTY = COUNTY OF ROSCOMMON = OF SIOL MUIREADHAIGH

O’ FIONNAGAIN = FINNEGAN = CAVAN \ MONAGHAN \ LOUTH = A BREIFNE SEPT

O’ FIONNAGAIN = FINNEGAN = ROSCOMMON \ GALWAY

O’ FIONNAIN = O’ FINAN = COUNTY OF MAYO = UI FIACHRACH MUAIGHE CHIEFS OF THE COOLCARNEY

O’ FIONNALAIN = O’ FENELON = COUNTY OF W.MEATH = CHIEFS OF THE DELVIN {DELBNA}

O’ FIRGHIL = O’ FRIEL = COUNTY OF DONEGAL = DESCENDED FROM THE EOGHAN, BROTHER OF ST. COLUMBCILLE

O’ FITHCHEALLAIGH = O’ FEHILLY, FIELD = COUNTY OF CORK = SEPT OF THE CORCA LAOIDHE

O’ FLAINN = O’ FLYNN = COUNTY OF ANTRIM

O’ FLAITHBHEARTACH = O’ FLAHERTY = COUNTY OF GALWAY = LORD OF THE MOYCULLEN AND IAR=CHONNACHT

O’ FLAITHBHEARTAIGH = O’ LAVERTY OR LAHERTY = COUNTY OF DONEGAL = LORDS OF THE AILEACH

O’ FLAITHRE = O’ FLATTERY = COUNTY OF DOWN = LORDS OF THE LECALE, KINGS OF ULIDIA

O’ FLANNABHRA = FLANNERY = COUNTY OF LIMERICK = THE UI FIDHGHEINTE, CHIEF OF DAL CAIRBRI

O’ FLANNABHRA = FLANNERY = COUNTY OF MAYO = THE UI FIACHRACH

O’ FLANNAGAIN = FLANAGAN = ROSCOMMON & OFFALY

O’ FLANNAGAIN = O’ FLANAGAN = FERMANAGH = CENEL CAIRBRE OF TUATH RATHA {TOORA}

O’ FLANNAGAIN = O’ FLANAGAN = MONAGHAN = CLAN CEALLAIGH = THE MACDONNELS OF CLANKELLY

O’ FLOINN = O’ FLYNN = COUNTY OF CORK = CORCU LAOIDHE

O’ FLOINN = O’ FLYNN = COUNTY OF CORK = MUSCRAIGE UI FHLOINN

O’ FLOINN = O’ FLYNN = COUNTY OF ROSCOMMON

O’ FOGHLADHA = FOLEY = COUNTY OF WATERFORD

O’ FUARAIN = FORDE OR FORAN = COUNTY OF CORK

O’ GADHRA = O'GARA = COUNTY OF SLIGO \ ROSCOMMON = CHIEFS OF THE LUIGHNE CONNACHT

O’ GAIBHTHEACHAIN = O’ GAHAN = COUNTY OF MAYO = THE UI FIACHRACH MUAIDE

O’ GAIRBHIN = O’ GARVEY OR GARVIN = COUNTY OF MEATH, THEN MAYO = SO. UI NEILL

O’ GAIRBHITH = O’ GARVEY = S.ERN COUNTY OF ARMAGH, THEN DOWN

O’ GAIRMLEADHAIGH = O’ GORMLEY = RAPHOE, COUNTY OF DONEGAL = OF CINEL MOEN {THEIR TRIBE NAME}

O’ GALLCHOBHAIR = O’ GALLAGHER = COUNTY OF DONEGAL = CENEL CONAILL

O’ GAMHNA = GAFFNEY OR CAULFIELD = OSSORY {LAOIS \ KILKENNY}

O’ GARBHAIN = O’ GARVEY OR GARVAN = COUNTY OF CORK \ KERRY = SAME STOCK AS O'MORIARITY

O’ GEALBHAIN = O’ GALVIN = COUNTY OF CLARE

O’ GÉIBHEANNAIGH = O’ KEAVENEY = COUNTY OF GALWAY = THE UI MAINE

O’ GLAIMHIN = GLAVIN = CONNACHT = THE HY FIACHRACH

O’ GLESAIN = GLEESON OR O'GLISSANE = TIPPERARY = SAME STOCK AS O'DONEGAN

O’ GRADAIGH = O’ GRADY = COUNTY OF CLARE & LIMERICK = THE DAL GCAIS

O’ GRADAIGH = O’ GRADY = COUNTY OF CLARE AND LIMERICK

O’ GRIOBHTHA = GRIFFIN = COUNTY OF KERRY AND CLARE

O’ HAGHMAILL = O’ HAMILL = S. TYRONE = CENÉL EOGHAIN {CENÉL BINNIGH}

O’ HAICHIR = O’ HEHIR OR O’ HARE = COUNTY OF CLARE = UI FIDHGHEINTE, LORDS OF THE MAGH ADHAIR

O’ HAILEACHAIN = O’ HALLAHAN = COUNTY OF CORK \ WATERFORD

O’ HAILEAGAIN = O’ HALLIGAN = COUNTY OF LOUTH \ ARMAGH {ORIEL}

O’ HAIMHEIRGIN = O’ BERGIN = COUNTY OF OFFALY = CHIEFS OF THE GEASHILL

O’ HAINIARRIADH = HENRY = S.E. COUNTY OF ULSTER

O’ HAINLE = O’HANLEY OR HANLY = COUNTY OF ROSCOMMON

O’ HAIRT = O’ HART = COUNTY OF MEATH = S.ERN UI NEILL, FOUR TRIBES OF TARA

O’ HALLMHURAIN = O’ HALLORAN = COUNTY OF CLARE {THOMOND} = SAME STOCK AS MCNAMARAS

O’ HALLMHURAIN = O’ HALLORAN = COUNTY OF GALWAY = CHIEFS OF THE CLANN FEARGHAILE

O’ HANLUAIN = O’ HANLON = COUNTY OF ARMAGH = LORDS OF THE ORIOR

O’ HANRACHAIN = O’HANRAHAN = COUNTY OF CLARE \ LIMERICK = THE DAL GCAIS

O’ HANRACHTAIGH = O’HANRAGHTY OR HANRATTY = COUNTY OF ARMAGH AND N. COUNTY OF LOUTH {UI MEITH}

O’ HAODHA = HAYES = VARIOUS COUNTIES

O’ HAODHA = HUGHES = COUNTY OF ULSTER

O’ HAODHA = O’ HEA = COUNTY OF CORK, CORCA LAOIDHE

O’ HAODHAGAIN = O’ HAGAN OR AIKEN = COUNTY OF TYRONE = CHIEFS AT TULLAHOGUE

O’ HAONGHUIS = ENNIS = COUNTY OF OFFALY AND MEATH = VARIANT OF O'HENNESSY

O’ HAONGHUSA = HENNESSY = COUNTY OF CORK = CORCA LAOIDHE

O’ HAONGHUSA = HENNESSY = COUNTY OF DUBLIAN \ MEATH = CHIEF OF GAILENGA BEG

O’ HAONGHUSA = HENNESSY OR HENCHY = COUNTY OF OFFALY = LORDS OF THE CLAN CHOLGAIN

O’ HARRACHTAIN = HARRINGTON OR O'HARRAUGHTON = COUNTY OF GALWAY

O’ HARTAGAIN = O’ HARTIGAN = COUNTY OF CLARE \ LIMERICK = THE DAL GCAIS

O’ HEACHIGHEARNA = HEARNE OR AHERN = COUNTY OF CLARE = THE DAL GCAIS

O’ HEACHTHIANNA = AHERN OR HEARNE = COUNTY OF CLARE = THE DAL GCAIS O’ HEADROMAN = O’ HEDERMAN, HETHERMAN, HEATHERMAN = COUNTY OF CLARE \ LIMERICK, E. CORK

O’ HEAGHRA OR EGRA = O'HARA = COUNTY OF SLIGO = LORDS OF THE LUIGHNE WITH THE O'GARAS

O’ HEALADAIGHTHE = HEALEY = MUSKERRY, COUNTY OF CORK

O’ HÉALAIGHTHE = O’ HEALY OR HEALIHY = COUNTY OF CORK

O’ HEIDEDIN = HAYDEN OR O’ HEADON = COUNTY OF CARLOW

O’ HEIDHIN = O’ HYNES OR O’HEYNE =GALWAY = UI FIACHRACH AIDNE

O’ HÉIDIN = HADE, HAIDE, HAYDE = COUNTY OF GALWAY

O’ HEIDIRSCEOIL = O’ DRISCOLL = S. KERRY, THEN W. CORK = CORCA LAOIGHDE

O’ HEIGCEARTAIGH = HEGARTY = COUNTY OF DONEGAL & DERRY = CENEL EOGHAIN

O’ HÉIGNIGH OR O’ HEICNIG = O’ HEANY OR MACANENAY = COUNTY OF FERMANAGH = KINGS OF FERMANAGH

O’ HEILIDHE = HEALEY = COUNTY OF SLIGO

O’ HEILIDHE = O’ HEALY = COUNTY OF SLIGO

O’ HIARLATHA = O’ HERLIHY OR O’HURLEY = CORK

O’ HICIDHE = HICKEY = COUNTY OF CLARE & N. TIPPERARY = THE DAL GCAIS

O’ HIFEARNAIN = O’ HEFFERNAN = COUNTY OF CLARE \ LIMERICK = CHIEFS OF THE OWNEYBEG

O’ HINNEIRGHE = HENRY OR O'HENERY = COUNTY OF TYRONE = CHIEF OF CULLENTRA

O’ HIONGARDAIL = HARRINGTON = COUNTY OF CORK AND KERRY

O’ HIONMHAINEAIN = O’ NOONAN = COUNTY OF CORK

O’ HIR = O'HARE = COUNTY OF ARMAGH = ORIEL SEPT OF O’ HÉIR

O’ HODHRAIN = O’ HORAN = COUNTY OF GALWAY AND MAYO

O’ HÓGAIN = HOGAN = COUNTY OF CLARE & TIPPERARY = THE DAL GCAIS

O’ HOIREACHTAIGH = O’ HERAGHTY = COUNTY OF GALWAY AND MAYO

O’ HUAITHNIGH = GREENE OR GREEN = COUNTY OF CLARE

O’ HUAITHNIGH = GREENE OR GREEN = COUNTY OF CORK

O’ HUALLACHAIN = HOULIHAN = W. MUNSTER AND THOMOND

O’ HUALLACHAIN = O’ HOLOHAN = COUNTY OF OFFALY = OF CLAN COLGAN WITH THE O'HENNESSY'S

O’ HUIGIN = HIGGINS = COUNTY OF W.MEATH, SLIGO AND MAYO = S.ERN UI NEILL

O’ HUIRTHILE = O’ HURLEY = W. CORK

O’ LABHRADHA = O’LOWRY OR LAVERY = COUNTY OF DOWN AND COUNTY OF ULSTER

O’ LAIGHIN = LYONS OR LYNE = COUNTY OF GALWAY AND KERRY = FIRBOLG ORIGIN

O’ LAOCHDHA = LEAHY = COUNTY OF CORK = CORCA LAOIGHDE

O’ LAOGHAIRE = O’ LEARY = COUNTY OF CORK

O’ LÉANACHAIN = LENAGHAN OR LENIHAN = COUNTY OF ROSCOMMON, LIMERICK \ TIPPERARY

O’ LEANNAIN = LENNON = GALWAY, MAYO AND FERMANAGH

O’ LEATHLAOBHAIR = O’ LALOR OR LAWLOR = COUNTY OF LEIX = 7 SEPTS OF LEIX

O’ LIATHAIN = LYONS OR LEHANE = COUNTY OF CORK AND LIMERICK = UI FIDHGHEINTE {ALSO A NORMAN NAME}

O’ LIMHAIN = O’ LAVIN = COUNTY OF ROSCOMMON

O’ LOCHLAINN = O’LOUGHLIN OR LOCHLAIN = COUNTY OF CLARE = LORD OF THE CORCOMROE

O’ LOIDEAIN = LYDON, LEYDEN OR O’LIDDANE = COUNTY OF GALWAY \ MAYO

O’ LOINSIGH = LYNCH = COUNTY OF GALWAY = NORMAN ORIGIN, ONE OF THE TRIBES OF GALWAY

O’ LOINSIGH = O’ LYNCH = VARIOUS INCLUDING CHIEFS OF THE DAL RIADA

O’ LONAGAIN = O’ LANIGAN = COUNTY OF TIPPERARY CHIEFS

O’ LONGAIN = LONG OR O’LANGAN = COUNTY OF ARMAGH O’ LONGAIGH = LONG = COUNTY OF CORK O’ LONGAIN = O’ LANGAN OR LONG = COUNTY OF ARMAGH CHIEFS

O’ LORCAIN = O’ LARKIN = COUNTY OF ARMAGH = CHIEF OF FARNEY AND W. UI BREASAIL

O’ LORCAIN = O’ LARKIN = COUNTY OF GALWAY = THE UI MAINE

O’ LORCAIN = O’ LARKIN = COUNTY OF TIPPERARY = ERANAGHS OF LORRHA

O’ LORCAIN = O’ LARKIN = COUNTY OF WEXFORD = CHIEF OF FOTHART

O’ LÚINIGH = O’LUNNEY = COUNTY OF DONEGAL \ TYRONE = CENEL MOEN

O’ MACDHA = O’ MACKEY = COUNTY OF TIPPERARY = AN ORMOND SEPT

O’ MADAIDHIN OR MATUDAIN= MADDEN = E. GALWAY = UI MAINE TRIBE

O’ MAILLE = O'MALLEY = COUNTY OF MAYO = CHIEFS OF THE FIR UMAILLE, OR HYMALIA

O’ MAINNIN = MANNION OR MANNING = COUNTY OF GALWAY = PICTISH ORIGIN

O’ MANACHAIN = MONAGHAN = COUNTY OF FERMANAGH = THE FIR MANACH BASED IN LURG

O’ MANACHAIN = MONAGHAN = E. ROSCOMMON = RULERS OF THE 3 TUATHAS

O’ MAOIL AODHA = MOLLOY OR MILEY = COUNTY OF ROSCOMMON \ E. GALWAY

O’ MAOIL EOIN = MALONE = OFFSHOOT OF THE O'CONNORS OF CONNACHT {?}

O’ MAOILÉDIGH = O’ MELODY = COUNTY OF CLARE \ GALWAY = CORCOMROE

O’ MAOILÉDIGH = O’ MULLEDY = COUNTY OF W.MEATH \ OFFALY = BALLYMALEDY

O’ MAOILEOIN = MALONE = COUNTY OF CLARE AND WEXFORD = ASSOC. WITH THE ABBEY OF CLONMACNOIS

O’ MAOILRIAGHAIN OR MAEL RIAIN= O'MULRYAN OR RYAN = COUNTY OF LIMERICK \ TIPPERARY

O’ MAOILSHEACHLAINN = MACLOUGHLIN OR O’ MELAGHLIN = COUNTY OF MEATH = OF MALACHY II {S.ERN UI NEILL}

O’ MAOL DHÓMHNAIGH = MOLONEY, MULLOWNEY OR MALONEY = COUNTY OF CLARE = CHIEFS OF THE KILTANNON O’ MAOLAGAIN = O’ MULLIGAN = COUNTY OF DONEGAL = CHIEFS OF THE TIR MACCARTHAIN

O’ MAOLAIN = MULLAN, MULLIN{S}, MULLEN, MULLANE = COUNTY OF DERRY = FOLLOWERS OF THE O'CAHANS

O’ MAOLAIN = MULLAN, MULLIN{S}, MULLEN, MULLANE = COUNTY OF GALWAY = DESCENDED FROM THE MAOLAN

O’ MAOLAIN = MULLINS AND MOLLINS = CORK AND MONAGHAN {RESPECTIVELY}

O’ MAOLALAIDHS = O'MULLALLY OR LALLY = COUNTY OF ROSCOMMON = THE UI MAINE

O’ MAOLCHALANN = MULHOLLAND = N. LIMERICK = DESCENDANT OF THE DEVOTEE OF {ST.} CALANN

O’ MAOLCHAOINE = O’ MULQUEEN = COUNTY OF CLARE, LIMERICK = DALCASSIAN, FROM ST. CAOINE

O’ MAOLCHATHAIGH = O’ MULCAHY = COUNTY OF TIPPERYARY

O’ MAOLCHATHAIL = O’ MULHALL OR MULCAHILL = COUNTY OF LAOIS = DESCENDANT OF THE DEVOTEE OF {ST.} CATHAL

O’ MAOLCONAIRE = O’ {MUL}CONRY OR CONROY = COUNTY OF ROSCOMMON

O’ MAOLCRAOIBHE = RICE = COUNTY OF LOUTH \ ARMAGH = ALSO OF WELSH ORIGIN

O’ MAOLDOMHNAIGH = MULDOWNEY = COUNTY OF KILKENNY

O’ MAOLDÚIN = O’ MULDOON = COUNTY OF CLARE {THOMOND} = THE UI BLOID

O’ MAOLDÚIN = O’ MULDOON = COUNTY OF FERMANAGH = CHIEFS OF THE LURG

O’ MAOLDÚIN = O’ MULDOON = COUNTY OF SLIGO = UI FIACHRACH

O’ MAOLMHUAIDH = MOLLOY OR MULLOY = COUNTY OF OFFALY = S.ERN UI NEILL

O’ MAOLMHUAIDH = O’ MOLLOY = OFFALY = S.ERN UI NEILL, LORDS OF THE FERCAL

O’ MAOLRUANAIDH = MULROONEY = COUNTY OF FERMANAGH AND IN MAYO \ ROSCOMMON

O’ MAONAIGH = MOONEY = COUNTY OF OFFALY AND VARIOUS OTHER

O’ MATHGHAMHNA = O’ MAHONY = COUNTY OF CORK = CENEL AODHA, OF THE EOGHANACHT

O’ MEACHAIR= MAHER OR MEAGHER = N. TIPPERARY

O’ MEADHRA = O'MARA OR O'MEARA = COUNTY OF TIPPERARY = CHIEF OF UI FAHY

O’ MEALLAIN = O’ MELLAN = COUNTY OF TYRONE = CENÉL EÓGHAIN OF MEALLANACHT

O’ MIADHACHAIN = MEEHAN OR MEIGHAN = OFFSHOOT OF MACCARTHYS OF DESMOND

O’ MIDHIR = O’ MEERE = COUNTY OF CLARE = ANGLO ORIGIN

O’ MOCHAIN = MOHAN OR MOEN = KILMACDUAGH, GALWAY AND KILLARAGHT, SLIGO

O’ MÓRAIN = MORAN = COUNTY OF MAYO, NEAR BALLINA

O’ MÓRDHA = O’ MORE OR MOORE = COUNTY OF LAOIS = LEADING SEPT OF THE 7 SEPTS OF LEIX

O’ MUGHRAIN = MORAN = GALWAY \ ROSCOMMON = THE UI MAINE, CHIEF OF CRIFFON

O’ MUILLEOIR = MILLER = COUNTY OF ANTRIM = SCOTTISH ORIGIN, CLAN MCFARLANE

O’ MUIRCHEARTAIGH = MORIARITY = S. KERRY = SAME STOCK AS O'DONOGHUES

O’ MUIRCHEARTAIGH = MURTAGH OR MACMURTRY = COUNTY OF MEATH

O’ MUIREACHAIDH = MURRAY = ROSCOMMON \ GALWAY = THE UI MAINE

O’ MUIREADHAIGH = MURRAY = W. IRELAND = INCLUDING A SEPT OF THE UI MAINE

O’ MUIRGHEASA = MORRIS = COUNTY OF SLIGO = THE UI FIACHRACH

O’ MURCHADHA = MURPHY = COUNTY OF WEXFORD {HY FELIMY}= DESCENDANT OF MURCHADH OR MURROUGH

O’ MURCHADHA AND MAC MURCHADHA = MURPHY = COUNTY OF TYRONE = THE CENEL EOGHAIN

O’ MURCHAIN = MORGAN = COUNTY OF MANAGHAN = MAINLY A NAME OF WELSH ORIGIN

O’ MURNAIN = MURNANE = MURNANE = COUNTY OF LIMERICK

O’ NEACHTAIN = O’ NAGHTEN = COUNTY OF CLARE = DALCASSIAN

O’ NEACHTAIN = O’ NAUGHTON OR NAGHTEN = COUNTY OF ROSCOMMON \ GALWAY = THE UI MAINE

O’ NEILL= O'NEILL = COUNTY OF TYRONE \ DERRY \ DONEGAL = THE CENEL EOGHAIN, RULERS OF TIR EOGHAIN

O’ NIALLAIN = NEILAN OR NEYLAN = COUNTY OF CLARE {THOMOND}

O’ NUALLAIN = NOLAN = COUNTY OF CARLOW = PRINCES OF FOHARTA {FOTHAIRT}

O’ OR MAC AN TSIONNAIGH = FOX = COUNTY OF MEATH = NICKNAME OF A CHIEF OF TEFFIA

O’ OR MAC GORMAIN = GORMAN = COUNTY OF LAOIS = UI BAIRRCHE

O’ OR MAC TRÉINFHIR = TRAYNOR = COUNTY OF MEATH

O’ PEATAIN = PEYTON OR PATTON = COUNTY OF DONEGAL = CENÉL MOEN

O’ RAGHALLAIGH = O’ REILLY = COUNTY OF CAVAN = UI BRIUIN BREIFNE

O’ RAITHBHEARTIAGH = O’ RAFFERTY = COUNTY OF DONEGAL \ SLIGO

O’ RAOGAIN = O’ REGAN OR REAGAN = COUNTY OF LIMERICK = THE DAL GCAIS

O’ REACHTAGAIN = O’ RATIGAN = COUNTY OF ROSCOMMON = COARBS OF ST. FINNEN

O’ RIADA = O’ REIDY = MUNSTER = KING OF ARADH IN THE 12TH CENTURY

O’ RIAGAIN = O’ REGAN = COUNTY OF MEATH \ DUBLIN = THE FOUR TRIBES OF TARA

O’ RIAGHAIN = RYAN = COUNTY OF CARLOW = CHIEFS OF THE UI DRONA, ALSO SEE MULRYAN

O’ RIORDAN = REARDEN OR O’RIORDAN = COUNTY OF TIPPERARY \ CORK = FOLLOWERS OF THE LORDS OF THE MUSKERRY

O’ RODAIN = O’ REDDAN = COUNTY OF CLARE = STEWARDS TO O'BRIEN AND MACNAMARA

O’ ROGHAN = O’ ROGAN = COUNTY OF DOWN = OF ARMAGH AND IVEAGH

O’ RUADHAIN = O’ RUANE OR ROWEN = COUNTY OF GALWAY = THE UI MAINE

O’ RUAIDHIN = O’ RUANE OR ROWEN = COUNTY OF MAYO = THE UI FIACHRACH

O’ RUAIRC = O’ ROURKE = COUNTY OF LEITRIM \ CAVAN = THE UI BRIUIN = RULERS OF BREIFNE

O’ RUANAIDH OR O’ MAEL RUANAID = ROONEY = COUNTY OF DOWN

O’ SCANNLAIN = O’ SCANLAN = MUNSTER

O’ SCOLAIDHE = O’ SCULLY = COUNTY OF W.MEATH

O’ SCOLLAIN = SCULLION OR O’ SCULLY = COUNTY OF DERRY

O’ SEACHNASAIGH = O’ SHAUGHNESSY = KILTARTAN, COUNTY OF GALWAY = THE UI FIACHRA AIDHNE

O’ SEAGHDHA OR SEGDA = O’ SHEA = S. AND E. KERRY = LORDS OF THE IVERAGH

O’ SEANACHAIN= O’ SHANAHAN = COUNTY OF CLARE = UI BLOID {DAL GCAIS}

O’ SEANAIN = O’ SHANNON = CARLOW \ WEXFORD

O’ SEASNAIN = SEXTON = THOMOND {ALSO AN ENGLISH NAME}

O’ SEIRIDH OR MAC SEIRIDH = O'SHERRY OR MCSHERRY = ORIEL, E.G. MONAGHAN AND ARMAGH

O’ SIODHACHAIN = SHEEHAN = COUNTY OF LIMERICK \ CORK = THE DAL GCAIS

O’ SIRIDEAIN = SHERIDAN = COUNTY OF LONGFORD \ CAVAN

O’ SLUAGHAIN OR O’SLUAGAHADAIN = SLOAN = OF SCOTTISH ORIGIN

O’ SÓCHLACHAIN = O’ SOLAN, SOLAHAN = COUNTY OF MAYO

O’ SUILEABHAIN = O’ SULLIVAN = COUNTY OF CORK = EOGHANACHT = O'SULLIVAN BEARE OF BEARA PENINSULA

O’ SUILEABHAIN = O’ SULLIVAN = COUNTY OF KERRY = THE EOGHANACHT = O'SULLIVAN MOR OF KENMARE BAY

O’ TARPAIGH = O’ TARPY, TARPEY, TORPEY = COUNTY OF SLIGO = LORDS OF THE CARRA

O’ TIGHEARNAIGH = O’ TIERNEY = COUNTY OF GALWAY, LIMERICK AND TIPPERARY = ORMOND'S FIR O'TYERNIE

O’ TIGHEARNAIGH = O’ TIERNEY = COUNTY OF MAYO = LORDS OF THE CARRA

O’ TIOBRAIDE = O’ TUBRIDY = COUNTY OF CLARE

O’ TREASAIGH = O’ TRACY OR TREACY = COUNTY OF CORK, GALWAY, LEIX {LORDS OF THE SLIEVEMARGY}

O’ TUAMA = O'TWOMEY OR TOOMEY = COUNTY OF CORK, AND COUNTY OF LIMERICK

O’ TUATHAIL = O'TOOLE = COUNTY OF KILDARE AND WICKLOW = DESCENDED FROM THE TUATHAL, KING OF LAIGIN

O’ URTHAILE = O’ HURLEY = COUNTY OF CLARE & N. TIPPERARY = THE DAL GCAIS

O'FAODHAGAIN= FAGAN = E. AIRGIALLA {ORIEL} = ALSO OF NORMAN ORIGIN

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July 7th, 2008

NOTE: A Coat of Arms is also sometimes referred to as Heraldry - a Code of Arms - Family Seal - Family Shield - Family Crest - Wappen - Escudo or Crest. Histories Last Name Surname Origin Meaning

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