Kingdom of Desmond
Cormac Mac Cárthaigh (died 1138) was a Gaelic Irish ruler who was King of Munster. A member of the Mac Cárthaigh clan of the Eóganacht Chaisil, he was the final king of the unified Kingdom of Munster before the realm was divided into the Kingdom of Desmond and Kingdom of Thomond in the aftermath of the Treaty of Glanmire.