User blog comment:B214/Question and Answers 3/@comment-223.196.231.170-20140704144739/@comment-16281343-20140704150205

Lucifer in Sirzechs' and the other Maous' case are just titles.

~And with regards to blood, it is also important to know the circumstances on how they had that blood.

This is how the Bael clan treats Venelana after she was married into the Gremory clan. "‘You are not even in the linage of the main-branch and you were sent to get married elsewhere so don’t get involved into the problems of the main-branch house of Bael’"