Son of the gray-haired one or son of the steward
Grason is an English surname-turned-given-name. It most likely originated as a variant of Grayson, meaning 'son of the reeve' (a steward or bailiff), or as a patronymic referring to the son of a man with gray hair.
Less common today
Grason isn't in the latest US Top 1000. It last peaked at #3,760 in 2006.
US births per 5-year period, 1990βpresent (SSA data).