Ó Fianna
Ó FIANNA, Ó FIANNAIDHE—I—O Fynea, O Finnee, Feeney, Feeny, Finney, Finny; 'descendant of Fiannaidhe' (soldier); a substitution for older Ó Féinneadha; the name of a family of the Ui Fiachrach who were formerly seated at Finghid, now anglicised Finned, in the parish of Easkey, Co. Sligo, and are still numerous in Connacht. To be distinguished from Ó Fídhne, which see.
Alphabetical Index to Irish Surnames