Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
BRAGG
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
Brag, among the Scandinavians, was the god of eloquence, and the word was anciently used in the sense of eloquent; also, accomplished, brave, daring.
Patronymica Britannica (1860)
BRAGG. BRAGGER. Skelton uses irag in the sense of proud, insolent; it also signifies brisk, full of spirits. Halliw. Tlie Scandinavian Apollo was so called.
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