Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
BONAR
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Local) A town in Scotland; a chain of hills; hills for tillage; also, the hill of slaughter. Cornish British, Bonar, the house of slaughter.
Patronymica Britannica (1860)
BONAR. A village of Sutherlandshire, and a feudal barony of which the family were possessed temp. William the Lion, ante 1200.
Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English