So, because the Chorus Lucia isn't the Dark Angels, and because they're probably going to wind up, story wise, an additional founding even off of the GotC, I decided to do new names for my HQ units and independent characters, based on bastardized Hebrew and Latin angelic names.
Grand Master of the Chapter: Ra'shnu
Master of the Death Wing: Mik'l
Master of Librarians: Raz'el
Interrogator Chaplain: Israf'l
Company Champion: Zaap'el
Venerable Dreadnought: Tahar'el
Thanks to Emily for the help with the angelic names :)