The gray settlement or town of gravel
Derived from Old English, Grayton likely combines 'graeg' (gray) or 'greot' (gravel) with 'tun' (settlement). It originally served as a habitational surname for families living in or near a gray-colored town or a stony area. Today, it is used as a rare given name that fits the modern trend of surname-style names ending in -ton.
Less common today
Grayton isn't in the latest US Top 1000. It last peaked at #5,627 in 2013.
US births per 5-year period, 1990βpresent (SSA data).