The principal sept of this name is O'hEighnigh in Irish, important and widespread in Oriel, formerly stretching its influence into Fermanagh. Hegney is a variant. Another family of the name in Ulster were erenaghs of Banagher in County Derry. Minor septs of O'hEanna, also anglicized Heaney were of some note in County Clare, County Limerick and County Mayo, up to the seventeenth century. The name is also spelt Heane and Heeney. In the latter part of the sixteenth century, an influx of settlers arrived under the patronage of Elizabeth I of England, and colonized the country beyond the 'Pale', the area around Dublin that was the only part firmly under English control. At the same time , groups of Presbyterian settlers were encouraged to migrate from Scotland to Ulster, thus establishing the distinctively Scottish surnames of Ulster. During the long centuries of English domination, Irish surnames were crudely Anglicized either phonetically or by translation. In the 19th century, political repression and famine combined to force many Irish people to seek other countries in which to live. Large numbers emigrated to the United States, where strong emotional ties to Ireland are still preserved in many families, while others found themselves transported, willingly or otherwise, to Australia, often after having first tried to make a living in England. Irish surnames are now very widely dispersed, and are common in England as well as in Ireland, the United States and Australia. When the sparse Irish population began to increase it became necessary to broaden the base of personal identification by moving from single names to a more definate nomenclature. The prefix MAC was given to the father's christian name, or O to that of a grandfather or even earlier ancestor. At first the coat of arms was a practical matter which served a function on the battlefield and in tournaments. With his helmet covering his face and armour encasing the knight from head to foot, the only means of identification for his followers, was the insignia painted on his shield and embroidered on his surcoat, the draped and flowing garment worn over the armour. Ireland was one of the earliest countries to evolve a system of hereditary surnames. They came into being fairly generally in the 11th century, and indeed a few were formed before the year 1000.