Question: Who is the father-in-law of Gauthildr Algautsdóttir?
Sentence (from "Ingjald"): Ingjald illråde or Ingjaldr hinn illráði ("Ingold Illruler" or "Illready") was a semi-legendary Swedish king of the House of Ynglings, son and successor of King Anund, and the father and predecessor of King Olof Trätälja.
Relevant evidence: Yes