Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
BURNETT
As described in historical dictionaries
Patronymica Britannica (1860)
BURNETT. Probably a corruption of Bernard ; or it may be, by a transposition of letters not uncommon, the Fr. brunef, brownish, tawny, and so a diminutive of Browne. 2. A parish in Somersetshire.
Surname type: Diminutive
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English