Talk:Gareth/@comment-38040348-20190805203044/@comment-35301270-20190806040252

Morgan and Morgause are basically combined into a single character in the Nasuverse.

That is the reason for all of the characters you mentioned being Arthur's niece/nephews and they all have the same mother. Though it hardly seems like any of them other than Gawain and Gareth seem to be on that sibling relationship level.