From Middle English stonstan 1 "stone" (Old English stan 1) and house "house" (Old English hus). The surname may be topographic for someone who lived in or by a stone house (something of a rarity in the Middle Ages) or habitational from a place so named such as Stonehouse (Devon Gloucestershire Northumberland). The principal source of the surname is perhaps Stonehouse Cote in Bilsdale (North Yorkshire).