Son of the gray-haired one
A modern American spelling variation of the English surname Grayson. It traditionally denotes the son of a 'gray' or 'reeve' (a local official), but is now chosen primarily for its trendy sound and aesthetic spelling.
Fewer than 5 boys were named Greysin in 2025.
US births per 5-year period, 1990–present (SSA data).
