Question: Kettil Karlsson rebelled against the king of Denmark that ruled under what House?
Sentence (from "Kettil Karlsson (Vasa)"): He rebelled against King Christian I in 1463, was Captain General "(rikshövitsman)" and "de facto" regent of Sweden from February to August 1464, stepping down during the brief return of King Charles Canutesson from exile.
Relevant evidence: Yes