Board Thread:Lore Discussion/@comment-5613590-20130530082620/@comment-10167444-20130602071432

Gwyn's firstborn was shamed, and basically kicked out of Anor Londo. There's no way in hell they would let him rule, especially seeing how they madee very attempt to completely remove him from existence. As someone said earlier there is also a statue of Ornstein in Anor Londo, which lends farther doubt to the theory of Ornstein being Gwyn's firstborn.