Muirecán mac Diarmata

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Muirecán mac Diarmata (died 863) was a king of Leinster in early medieval Ireland. He belonged to the Uí Fáeláin sept of the Uí Dúnlainge, whose royal seat was at Naas in the eastern Liffey plain, known as Airthir Liphi. He was the son of Diarmait mac Ruadrach, and his relatives included other Leinster kings: his uncle Muiredach mac Ruadrach and his grandfather Ruaidrí mac Fáeláin. The kingship of Leinster was confusing at this time, with lists placing him after rulers who died later. It seems Cerball mac Dúnlainge, king of Osraige, kept Leinster kings from exercising real power. Muirecán was killed by Norsemen in 863 and is described as king of Naas and Airthir Liphi. His sons Domnall mac Muirecáin and Cerball mac Muirecáin also became kings of Leinster, while his son Máel Mórda mac Muirecáin ruled Airthir Liphi.