Brian_Sreamhach_MacMathghamhna_O'Brien
Brian Sreamhach Ua Briain (died 1400),[1] also known as Briain Catha-an-Aonaigh Ó Briain,[2] and Brian Ó Briain,[3] was King of Thomond from 1369 to 1400.[4] He was the son of Mathghamhain Maonmhaighe Ó Briain. In about 1370 or 1371, he defeated and captured Gerald FitzGerald, 3rd Earl of Desmond near Limerick.[5] On his death in 1400 he was succeeded by his brother Conchobhar, who was succeeded on his death in 1426 by Brian's son Tadhg na Glaoidh Mór.