Son of the gray-haired one
A modern creative spelling of the English surname Grayson. It traditionally denotes the son of a steward or the son of a man with gray hair. This specific spelling variation is rare and follows contemporary American naming trends of replacing vowels with 'y'.
Fewer than 5 boys were named Grasyn in 2025.
US births per 5-year period, 1990–present (SSA data).