Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
GROSSMAN
As described in historical dictionaries
Patronymica Britannica (1860)
GROSSMAN. Probably from residence near a cross. See Cross and Crouch. CROSSWELL. CROSSWELLER. In
Religion of origin: Jewish
Language of origin: Hebrew