Question: Who is the mother-in-law of Bertha Of Savoy?
Sentence (from "Henry IV, Holy Roman Emperor"): Henry IV (11 November 1050 – 7 August 1106) was Holy Roman Emperor from 1084 to 1105, king of Germany from 1054 to 1105, king of Italy and Burgundy from 1056 to 1105, and duke of Bavaria from 1052 to 1054.
Relevant evidence: No