Well, there's your first problem for a start.
Pellinore has nothing to do with Sir Tor in Pre-Vulgate of whom his father is instead King Aries. It is only in the Post-Vulgate that Tor is suddenly made another one of Pellinore's illegitimate children and if I'm not mistaken it was Mallory only who added the whole "Pellinore begot with the maiden Vayshoure half by force" (make of that what you will).
Wow, how slanderous.