Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
GARRATT
As described in historical dictionaries
Patronymica Britannica (1860)
GARRETT. GARRATT. It has been decided legally (!) that Garrett and Gerald are but one name. Jacob, Law Diet., title Mixnomer. But Garrett is a hamlet iu Surrey, famous for its mock-mayor.
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English