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Origin Displayed: Irish
Spelling variations include: O'Reilly, O'Reilley, O'Reily, O'Rielly, O'Riely, O'Riley, O'Rilley and many more.
First found in county Cavan, where they held a family seat from very ancient times.
Some of the first settlers of this name or some of its variants were: the families who settled in Newfoundland - in St. John's, Tilton Harbour, Placientia, Tickle Bay, Tilt Cove, and many more, between 1805 and 1871; James O'Reiley settled in New York in 1823.
(Above is a small excerpt from our 1800 word history)
Some noteworthy people of the name O'Reilly
John Boyle O'Reilly (1844-1890) Ir/Am journalist/Fenian agitator
Anthony "Tony" John Francis O'Reilly (1936-) Irish industrialist
William O'Reilly (1905-) Australian cricket player
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