Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
BARRETT
As described in historical dictionaries
Patronymica Britannica (1860)
BARRETT. BARRITT, &c. Baret,a personal name of Teutonic origin, is found here in Saxon times. See Domesd. In various forms it has always been very common in France and England.
Surname type: Diminutive
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English