Harald Sigtryggsson

Harald Sigtryggsson (Old Irish: Aralt mac Sitric; Old Norse: Haraldr Sigtryggsson [ˈhɑrˌɑldz̠ ˈsiɣˌtryɡːsˌson], died 940) was a Viking leader who ruled Limerick in the early 10th century. He was the son of Sitric Cáech and great-grandson of Ímar, making him one of the Uí Ímair. He was installed as king of Limerick following the capture of the previous king Olaf Scabby-head by Harald's cousin Olaf Guthfrithson, king of Dublin, during a battle at Lough Ree in 937. Harald died in 940 and was ultimately succeeded by Ivar of Limerick.