Ó Ceallaigh

Ó Ceallaigh
Ó Ceallaigh
Parent house	Connachta
Country	Ireland
Founder	Máine Mór
Current head	Robert Walter Joseph Charles O'Kelly
Final ruler	Feardorcha Ó Cellaigh
Titles	Kings of Uí Maine; Kings of Brega; Princes of Uí Maine; Count Palatine of the Holy Roman Empire; King-at-Arms of the Holy Roman Empire; Baron of Clankelly; Baron of Dungannon; Counts of Gallgh and Tycooly; High Treasurers of Connaught; Commander of the Connaught contingent of Brian Boru's Army;

O'Kelly (Irish: Ó Ceallaigh [ˌoː ˈcal̪ˠəj]) is an Irish surname and the name of a number of distinct sept families in Ireland. The most prominent of these is the O'Kelly sept who were the chiefly family of the Uí Maine in Connacht. Another sept is that of the kingdom of Brega, descended from the Uí Néill. A more minor sept of O'Kelly was that descended from the Uí Máil; this sept is referred to in Irish as the Uí Ceallaig Cualann, in reference to the region of their origin, Cualu.