Kinsella, Cinnsealach A Gaelic surname, one of the few without the prefix ó or Mac, being taken from the clan name Uí Ceinnsealaigh which was a territory covering much of north Wexford and parts of southern Carlow and Wicklow. Cinnsealach from ceann salach meaning ‘unclean head’. The sept took their name from Eanna Ceinnsealaigh fourth in descent from Cathair Mor, High-King of Ireland in the fourth century, they are descended from Enna Cinnsealach son of Diarmaid MacMurchadha, the King of Leinster who invited the Cambro-Normans to Ireland. In 1890 Kinsella was principally found in Dublin, Wexford, Wicklow and Kildare, and the estimated number of bearers was 3,620. In the United States Kinsella is the 7,966th most numerous surname with an estimated 2,750 bearers.