Board Thread:Dark Souls II/@comment-10209824-20140506193921/@comment-10209824-20140508224547

Definitely. The problem is that there are similar things that connect the other bosses to the bosses in DS1. For instance: the Crystals in Brightstone and Writhing Ruins. I think that, an this is an ENB theory, that the Great Souls fused with those that found them and as such they inherited there traits and desires. In a way that would make your theory partially right, the Lost Sinner is half Witch of Izalith and half whoever found her Lord Soul. Although it would be a mistake to say it is either or, now they are one and the same.