Griffin (surname)

Griffin is a surname of Irish, English and Welsh origin. Griffin was the 75th most common surname on the island of Ireland in 1891. It was estimated in 2000 that Griffin is the 114th most common surname in the U.S., with a population in the order of two hundred thousand.
Griffin in Ireland.
The surname "Griffin" has a number of Gaelic sources in Ireland.
Ó Gríofa.
The spelling Ó Gríofa (male) or Ní Ghríofa (female) is associated with the Co. Clare family, whose surname was also anglicised as O'Griffey or O'Griffy. Ó Gríofa translates to English as "descendant of the Griffin-like". 
Prior to the Irish spelling review, Ó Gríofa was spelt Ó Gríobhtha. The Ó Gríofa were chieftains of the Cineal Cuallachta branch of the Dál gCais, or Dalcassians, with their castle at Ballygriffy located in North Ballygriffey, Dysert (formerly the barony of Inchiquin). The Ó Gríofa are of the same stock as the O'Deas and the O'Quins, who belong to the Cineal Fearmaic, or more appropriately, the Ui Fearmaic. 
Ó Grifín.
The "Ó Grifín" (male) / "Ní Ghrifín" (female) spelling belongs to the Kerry family. The Kerry Griffins are descendants of Gallowglasses who fought in the Desmond Rebellions against the English. 
Ó Gríofáin.
Found along the Mayo, Roscommon and Galway border. 
Griffith.
In Ireland, the surname Griffin can also be associated with the Welsh surname "Griffith", but to a much lesser degree.
Griffin in Wales.
The surname "Griffin" in Wales, generally speaking, is a variant of the surname "Griffith", or other similar Welsh names.