Muriel

The name is of Goidelic origin and was originally spelled as Muirgheal (muir "sea", gheal "bright") in Irish and Muireall in Scottish Gaelic. Various versions have long been evident in Breton, Irish, and Scottish Gaelic languages. The name was very common in medieval England, typically in the form of "Merial". Unusually for a name of Celtic origin, it remained common after the Norman Conquest, although rare from about 1300.