Is raizel a lord?
After giving Raskreia the other half of Ragnarok, Raizel tells her to have faith in herself as she is the Lord.
Who killed the Lord in Noblesse?
The current Lord of the Werewolves is Kentas after Maduke, the 2nd Elder of the Union was killed by Muzaka and Noblesse after he almost killed the Werewolf race to extinction.
What happened to the previous lord in Noblesse?
The Previous Lord ruled over the Nobles for a long time, spanning several thousand years, such that he had seemingly forgotten his own age or for how long he had ruled. At some point in time, before the the Noblesse disappeared from Lukedonia, he fathered Raskreia.