Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
LANGLOIS
As described in historical dictionaries
Patronymica Britannica (1860)
LANGLOIS. Fr. rAnglois, "the Englishman." An importation from Fj-ance, where it is as common a surname as ' French ' is "with ourselves.
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English