Gregg and Greg are surnames of English or Scottish origin. In England, they are variant forms of the surname Gregory.[1] The surnames are first recorded as Gregge in 1234, within the Liber feodorum, a document compiled in the reign of Henry II of England. Another early instance of the name is Gregge, recorded in 1306, within the Feet of Fines (for Essex); and as Greggez in 1504, within the Register of the Freemen of the City of York.[2]
Gregg is also a Scottish surname, a shorthand variant of the Highland Clan Gregor or MacGregor.