Is there a title for those that are related to Sins? Groll is the Sin of Envy so does his wife get a title too, like in the case of the tsar and tsarina or king and queen?
Sin is its own title, and it’s attributed to an immortal entity far more powerful than most demons and angels (Perfections are the same). Marriage to a Sin/Perfection doesn’t give one a huge title other than Lord or Lady, which is usually the go-to title for any above one’s rank. (Think how -san is used for anyone senior you in Japanese)
The only one that has a stick up his ass about his title is Satan himself, who prefers My King or Your Majesty because he’s the damn king and he will not let anyone forget it.
In Groll’s case, he actually married into Hell’s Royal Family, so…his wife’s title is either Princess, Lady, or Her Highness.
(Nice portrait of the lovely couple in their matching ceremonial armor)
Groll’s wife’s name is Lin. She prefers the title Lady unless she’s super mad or needs to be Princess of Hell for a bit. And Groll’s preferred title is Lord, as well.