Ó Gríobhtha
Ó GRÍOBHTHA—I—O Greefa, O Griffy, O Grighie, Griffey, Griffy, Greehy, (Griffith, Griffiths, Griffin); 'descendant of Gríobhtha' (griffin-like, fierce warrior); the name of a Dalcassian family who were chiefs of Cinel Cuallachta, in the south-east of the barony of Inchiquin, and had their castle at Ballygriffy; common in Thomond, but usually anglicised Griffin.
Alphabetical Index to Irish Surnames