That kind of tracks. He's peripherally aware of the Fifth, because The Necromancer's Marriage Season seemed to think it was the only House worth acknowledging past the Third. He has the impression of civilized society, people with more titles than sense, but that might've just been every character in Marriage Season.

"Fair enough." He does have more titles than anyone should. "What about me says Fifth? Forgive the interrogation. I'm just trying to get caught up."