Ellar m
Scottish: Anglicized form of the Gaelic name Eallair, originally a byname Ceallair, referring to someone who was a butler or steward in a monastery (Latin cellārius, a derivative of cella storeroom, cellar). The initial C- was lost through the frequent use of the given name in association with the patronymic surname Mac Ceallair.
First names dictionary. 2012.