Inishmurray (Irish: Inis Muireadheach, meaning "Muireadheach's island") is an uninhabited island situated 7 km off the coast of County Sligo, Ireland. It covers 228 acres (0.9 km²). The island may be named after the early saint, Muiredach mac Echdach (fl. early 6th century) of Killala. There are remains of an early Irish monastic settlement. Laisrén (Saint Molaise) Mac Decláin reputedly founded a monastery here in the 6th century. He was confessor of Saint Columba after the Battle of Cúl Dreimhne on the mainland nearby.