Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
DEER
As described in historical dictionaries
Patronymica Britannica (1860)
DEER. DEERE. Sometimes, doubtless, from the animal, like Buck, Hart, Stagg, &c. ; but it is also a local name from two parishes, Old and New Deer, in Aberdeenshire.
Surname type: Nickname
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English