Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
LEGARD
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Nor. Fr.) Le Gard, the guard or protector. Probably was first assumed from the possession of some trusty or confidential office.
Patronymica Britannica (1860)
LEGARD. LEGEARD. LEGUARD. Fr. le garde, the guard, Iveeper, or warden; one who secures or preserves.
Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
Surname type: Occupational name
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English