Ó Fearáin
Ó FEARÁIN—I—O Feran, O Faran, O Ferran, O Farrane, Feran, Feron, Ferran, Fearon, Fearen, Fearn, Fern, Farran, Farren, &c.; 'descendant of Fearán' (diminutive of fear, a man, or 'pet' diminutive of Fearadach); the name of a branch of the Cinel Eoghain in Ulster.
Alphabetical Index to Irish Surnames