Board Thread:Warhammer 40k General Discussion/@comment-71.91.63.134-20150920063835/@comment-97.122.163.43-20160822191407

The Soul Spear and the Soul Drinkers story arc were the evidence. The Spear was coded to a specific Primarch according to the story, but the Soul Drinkers are not descended from Dorn as it is stated in the final novel in the story arc.