by Brian Edward Rise
A forest named Coit Celidon in early Welsh, purported to be the site of Arthur's seventh battle in the Historia Brittonum. Caledonia is also an ancient name for Scotland. Roman geographers place the people called the Caledonii north of the Clyde-Forth line. The Welsh, however, applied the name to the forested area closer to the Border. See also Celidon.
Recently postulated as possibly being within the operating range of Lucius Artorius Castus and his Sarmatian calvary in the late fourth century.