Thomond (; Modern Irish: Tuamhain) was a kingdom of Gaelic Ireland, associated geographically with present day County Clare and County Limerick, as well as parts of County Tipperary. The kingdom represented the core homeland of the Dál gCais people and although they ruled, there were smaller groups of other Gaels in the area. It existed from the collapse of the Kingdom of Munster in 12th century as competition between the Ó Briain and the Mac Cárthaigh led to the schism between Thomond (North Munster) and Desmond (South Munster). It continued to exist outside of the Anglo-Norman controlled Lordship of Ireland until the 16th century.