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Lyons

Lyons is an Irish surname whose name derives from the Celtic word for "grey". This surname derives from the Irish noble names of Ó Laighin and 'Ó Liatháin. These Irish families are not related to the Norman noble family that originated in Normandy. However, confusingly, there are also descendants of the noble family, which had seats in County Offaly and County Westmeath, in Ireland.