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Aedh mac Cathal Crobdearg Ua Conchobair (reigned 1224–1228) was King of Connacht with opposition alongside his uncle Toirdhealbhach mac Ruaidhrí Ó Conchobhair. Aedh succeeded his father Cathal Crobhdearg upon his death in 1224 but struggled to assert control over the entire province. His reign closely mirrored the early years of his fathers with two rival claimants, backed by outside powers, fighting an indecisive civil war lasting several years.