Shijing said:King Arthur, the Myth
by David Nash Ford
Some people believe that King Arthur is so inextricably tied up in Celtic Mythology that he must, in origin, have been, not a man at all, but a god. Like so many other characters featured in the Mabinogion, Arthur in his earliest form, appears almost entirely mythical. He and his companions have superhuman strength and abilities, and consort with giants and other mythological creatures. In the early Welsh poem "Preiddeu Annwfn", Arthur visits the Celtic Underworld, Annwfn, and his adventures closely parallel those of the cauldron-seeking god, Bran the Blessed. Even in Geoffrey of Monmouth's "History of the Kings of Britain," and Sir Thomas Malory's "Le Morte D'Arthur," upon being fatally wounded in battle, Arthur is carried to the mystical Avalon, apparently the Underworld home of the Celtic god, Afallach. Many legends around the country attest to Arthur's immortality. He is said to be sleeping in one of numerous caves waiting to return and lead his people.
Although I would naturally like to have Arthur be some kind of bear worship or some such... :D the above bold stood out to me because it made me think of Caesar in relation to Mithraism and mithraea (caves) that I’m pretty sure it was this thread where Caesar is discussed in some way with Mithraism. My thinking goes as such in terms of Caesar being Arthur (just thoughts) - Caesar is linked with Mithraism - then is murdered and is worshipped in some fashion by his soldiers, etc who also followed Mithraism - which is spread to England by Roman soldiers later when they invade and have a stronghold there – Caesar is remembered by the locals as the person who invaded before and must have caused a big stir when he did – the locals are told by Roman soldiers, etc about Caesar being equated with being a god (immortality from above) and possibly the comet at his death (if I remember correctly) – this then gets passed down among the locals that eventually becomes the Arthur legend, etc. Just thinking out loud.
I'll have to look at this Celtic god, Afallach and see if there is any connection to comets in some way.