Board Thread:General Discussion/@comment-11276487-20130724234237/@comment-13446185-20130806212706

Mantling doesn't remove the other god it simply replaces, just look at Sheogorath and Jyggalag, they were the same, but since the hero of Kvatch mantled Sheogorath they are now serperate.

And if I didn't prove to you that Tiber and the Underking are part of the same diety then you are either can't read or you aren't looking at the correct page.

look up "Shezarrine" and "Ysmir Wulfharth" on the UESP wiki.