Connor

The O'Conors (Irish Ó Conchobhair) were the royal dynasty of Connacht in western Ireland. They held the kingship of Connacht on and off from 967 and continuously from 1102 until 1475, and gave Ireland two high kings: Tairrdelbach Ua Conchobair and his son Ruaidrí, the last high king. Ruaidrí accepted Norman overlordship under the treaty of Windsor in 1175 while retaining Connacht.

In 1337 the family ruled from its Roscommon heartland, but succession under Brehon law went by election among rival kinsmen, feeding internal feuds. By the late fourteenth century the dynasty had split into two rival lines, the O'Conor Don and the O'Conor Roe.

Feidhlimidh Geangcach, who died in 1474, was the last fully recognised king of Connacht, though An Calbhach O'Conor Don was still inaugurated as king during the fighting of 1643, before the Gaelic order was broken.