Crovan Dynasty
Descendants of the Dublin Uí Ímair may have persisted into the 13th century in the line of Godred Crovan, King of Dublin and King of Mann and the Isles, although his ancestry is not agreed upon and may very well be different. If he in fact was then he was mostly likely a son or nephew of Ímar mac Arailt above, one of the last certain Uí Ímair kings of Dublin and a grandson of Amlaíb Cuarán. Godred's descendants, although vassals of the Kings of Norway, continued to rule into the 1260s, the last being Magnus Olafsson (to 1265), or briefly his son Godred VI (1275).
Read more about this topic: Uí Ímair, Later Mann and The Isles