;’) The name for Camelot probably came from the Roman name for Colchester, Camulodunum, which would also be a candidate for a post-Roman capital of some sort were it not for the Angles, Saxons, and Jutes’ having come in that way. Some writers attribute the name to a site near this or that road crossing this or that River Camel (there are a few different rivers and streams by that name in the UK). “Dark Ages” Viroconium is one of the better candidates for the “real” Camelot, but the story is probably a composite, and probably has pre-Roman roots.
As a consequence of that "X" many of those places are wrongly considered early Saxon sites rather than existing Celtic sites taken over by Saxons invited in by some local Romano-Celtic king.
In Camelot we have, right at the start, the Celtic "ker" abbreviated by "r" dropping. That's followed by "me", pronounced more like "maygh", then an "l" for "Elle", and a "t" which could be reflexive for all anyone can figure out about that sound.
This would be point/county/kingdom of Mc Elle, or something pretty close to that, and there are still large numbers of old Irish, Welsh, Scottish, Cornish and Breton names that have that sequence.
Kind of like to know where this particular Roman Fort is located.