User blog comment:Crimson Marauder/Origin of Vampires???/@comment-25942629-20151218150038

I think Kagami is only using the names to have names, and I believe they are unrelated to any historical figures or are else only loosely related. It's also possible that those people were human fans who bored the vampires' last names. Also, being turned by a second progenitor does not make one a third progenitor. Ferid is a seventh, and he turned Crowley, who is a thirteenth. Crowley turned Chess and Horn, who are both seventeenth. Being a progenitor is determined by power and ability. It is entirely possible that Ferid is actually older than Krul, although age definitely increases a vampire's strength.