Board Thread:General Discussion/@comment-26394456-20150714132009/@comment-25926288-20150720174130

Mordred is usually Arthur's illefitamate son, but his mother usually varies. Morgause to Morgana to whatever random woman they come up with.

Mordred becoming Mor'du would be cool, but Arthur doesn't seem that old to have a son that's adult or older. Mor'du's whole story was about his brothers as well.