Career
Ó Ciardhubháin is said to have been a native of Dunbally castle, near Dunmore, County Galway. He had a quarrel with Thomas III de Bermingham, Ó Cellaigh of Áth Liag and other local families which forced him and his family to flee to the town of Galway, leaving the de Berminghams to possess their property. A variant tradition states that:
The family, while always acknowledged as of Gaelic origin, eventually rendered their surname from Ó Ciardhubháin to Kirwan.
Known descendants of William Ó Ciardhubháin include
Joseph West. Kirwan
Annette Kirwan
Magdalen Kirwan
Jim Kirwan
John William Kirwan
Richard Kirwan
Review
Augustine Kirwan
Sir John Kirwan
Stephen Kirwan
Dominick Kirwin.
