Conor na Siudane Ua Briain

Conor na Siudane Ua Briain (died 1268), son of Donnchadh Cairbreach, ruled Thomond as English colonisation advanced: the castles of Clare and Bunratty were built in 1249–1253. Through yearly tribute he kept the rest of his kingdom, and in 1257 he and his son Tadhg nearly expelled the English.

In 1268 he was slain fighting Conor Carrach O'Loughlin at the wood of Siudan, the place that gave him his epithet. Buried at Corcomroe Abbey, where his stone effigy survives, he was succeeded by his son Brian Ruadh.