Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
BEAUFORT
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Nor. Fr.) De Beaufort, from the fine or commodious fort. De Bello Forti.
Region of origin: Europe
Country of origin: France
Language of origin: French