Family name origins & meanings
- Scottish : patronymic from Grier.
- A Scottish family by the name of Grierson claim descent from Gilbert, son of Malcolm MacGregor (died 1374), 11th Lord of MacGregor. Gilbert was known as both MacGregor and Gregorson. In 1400 he was granted lands by the Earl of March in the name Grierson. The numerous northern Irish bearers of the name Greer claim descent from this same Gilbert.