Garelot, Garloc, Garlot
A kingdom, castle, or city in northern Britain, near Clarence. The Vulgate Merlin mentions both Urien and Nentres as its rulers; Malory gives it entirely to the latter.
It was one of the lands in rebellion against Arthur in the early days of his reign. Garlot was invaded by Saxons, and served as the site of several important battles.
It might be identical with Galloway. Phyllis Ann Karr says: “With few clues as to the location of this kingdom, I suggest East Lothian.”
Brandegorre of Estrangorre | The Legend of King Arthur