Board Thread:Lore Discussion/@comment-10993011-20140918001226/@comment-17114085-20140918024912

Murky Night wrote: Harold Burned-Mane wrote: A blog I made on the same subject.

I actually think that she may be the actual child of Barenziah and Tiber Septim, or the child's daughter. An interesting fact is that Katariah and Barenziah were from the same house, House R'Aathim. This is awesome, thank man.

But, for all we know, Barenziah and Tiber Septim's love child was aborted (unless the author of The Real Barenziah wasn't accurate, which is entirely possible. Especially as they were about the Nightingale) If you were Barenziah wouldn't you pretend that you did abort the child and you didn't give it away to a family member so it could live? It is just a theory that I have since it would explain why Katariah and her son could use the Amulet of Kings.