No idea. But if he's really and actually King Arthur, he should at least recognize the name if you bring it up to him.

...Though, uh, I don't actually know how you'd manage that? Do you just, I dunno, walk up to him like, "hi, I've got some questions to ask"?

[ She doesn't actually know how kings in their courts work. Most of her knowledge comes from movies and dramas (which always seem to kind of handwave those details), or else outlier-type circumstances. ]