As described in historical dictionaries

Patronymica Britannica (1860)

LE BLANC. Fr. " the White." Arms granted 1753.

Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.


Region of origin: Europe

Country of origin: France

Language of origin: French

BritishSurnames.uk is a Good Stuff website.