Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
DREW
As described in historical dictionaries
Patronymica Britannica (1860)
DREW. DRE WE. l . Drogo, an early Norman personal name, w; so anglicised.
Surname type: From given name or forename
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English