O'Farrell

'''O'Farrell''' is an anglicised form of the Old Irish patronym ''Ó Fearghail''. According to the historian C. Thomas Cairney, the O'Farrells were part of the Conmaicne Rein tribe in Ireland who came from the Erainn tribe who were the second wave of Celts to settle in Ireland from about 500 and 100 BC. Provided by Wikipedia