Copied from Gen-Medieval/soc.genealogy.medieval by Stewart Baldwin at www.rootsweb.com/~medieval/man.htm:
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Echmarcach mac Ragnaill, d. 1065
king of Dublin, 1036-8, 1046-52,
also king of Man and Galloway
Echmarcach, king of Dublin (1036-1038 and 1046-1052), son of Ragnall. He was expelled from the kingship of Dublin in 1052, and went "over the sea". The contemporary Marianus Scotus records his death in 1065, as "rex innarenn", generally interpreted that he was king of the Rhinns in Galloway.