Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
DUNBAR
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Local) From the town of Dunbar, at the mouth of the Frith of Forth, Scotland. Dunabar, Gaelic, signifies the castle, town, or fort on the height or summit. The town was so called from its situation on the rock which at this place projects into the sea.
Surname type: Location or geographical feature
Origin: Celtic
Region of origin: British Isles
Country of origin: Scotland
Religion of origin: Christian
Language of origin: Gaelic