O'Conor (Middle Irish: Ó Conċuḃair; Modern Irish: Ó Conċúir), is an Irish Gaelic Aristocratic and Landed Gentry Family who are the historic Kings of Connacht and the last High Kings of Ireland before the Norman invasion. The family seat is Clonalis House outside Castlerea in County Roscommon. The O'Conor family can trace their lineage back to the 5th century without dispute but through folklore and mythology to Adam. The clan name originated in the 10th century as a derivative of its founder Conchobar mac Taidg Mór. The family contributed to Irish society in art, history, language, politics, diplomacy, etc... before and during colonial rule in Ireland.They descend in the paternal line from the Connachta's Uí Briúin Ai. The current O'Conor Don is Desmond O'Conor Don (b. 22 September 1938) who lives in Rotherfield, East Sussex in England.