Board Thread:Warhammer 40k General Discussion/@comment-6767898-20130227013545/@comment-6134883-20130410165132

Hey if the Blood Angels have managed to produce the Sanguinor out of their faith and yearning for their progenitor (or maybe just allowed Sanguinus' soul to keep together and occasionally manifest) why couldn't the Ultramarines heal their founder?

And King Arthur is not a 'baseless' legend. However he is most probably the result of combining several figures including Ambrosius Aurelianus, Riothamus and whoever led the victory at Badon.