Ó Cathail

Rev Patrick Woulfe

Ó CATHAIL—IO Cahill, Cahill; 'descendant of Cathal' (battle-powerful). There are several distinct families of this name, of which the following are the most important: (1) Ó Cathail, of Cinel Aodha, in the south-west of Co. Galway, of the same stock as the O'Shaughnessys; (2) Ó Cathail of Crumthann, in the east of Co. Galway; (3) Ó Cathail of Corca Thine, now anglicised Corkehenny, in the parish of Templemore, Co. Tipperary, who gave its name to Ballycahill; (4) Ó Cathail of Loch Lein, who were lords of the Eoghanacht of that district before the O'Donoghues; and (5) Ó Cathail of Ui Flaithri, near Corofin, Co. Clare. These families were all well-represented at the end of the 16th century.

Alphabetical Index to Irish Surnames