That's referring to two different people.
Are you sure?
But seriously, how are you sure? Even if you can lay out a bunch of rules of formal English that lawyers and judges would use interpreting a statute or something, you'd have to also say Corb was speaking in strict compliance with those rules.
I think that it's highly unlikely that Merlin is the Conqueror, but I don't think those two sentences make it certain. Beowulf, Vadderung, and Santa are the same person, so there's even more reason to be cautious about claiming they're definitively not the same person.