Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
BLACKMAN
As described in historical dictionaries
Patronymica Britannica (1860)
BLACKMAN. A baptismal name originally derived from the personal quality of a darJi comi3lexion. It is common in A-Sax. charters, and several persons called Blacheman and Blachemannus occur in Domesd. as holders antecedently to the making of that survey. One of these is in Kent, where there is a parish called Blackmaustone, which may have been named after him.
Surname type: Occupational name
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English