Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
FROST
As described in historical dictionaries
Patronymica Britannica (1860)
FROST. Frost is the name of a dwarf in the Scandinavian mythology, and our nursery hero, "Jack Frost," as Mr. Ferguson suggests, may be derived from that source. One Alwin Forst was a tenant in CO. Hants before Domesd., aud his name by a slight and common transposition would become Frost. The H.R. have many Frosts without prefix.
Surname type: Nickname
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English