The Irish surname McCormack is of patronymic  origin. The name is an anglicized form of Gaelic Mac Cormaic meaning “‘son of Cormac.” The personal name Cormac is a Gaelic name composed of the elements corb  meaning “raven’” and  mac meaning “‘son.” The McCormack name is predominantly found in East Ulster in the north of Ireland particularly in counties Antrim and Down. The earliest known record of the surname McCormack in what is now the United States dates back to 1654, when Dennis McCormack arrived in Massachusetts. This makes him one of the first documented bearers of the name in the American colonies. Another early mention is of Neal McCormack, whose name appears in Kings County, Virginia court records in May 1708 .A notable bearer of the name is Mark McCormack the American born sports agent and founder of the company IMG.