Question: Who is Świętosława Of Poland's mother-in-law?
Sentence (from "Vratislaus II of Bohemia"): (d. 14 January 1092), the son of Bretislaus I and Judith of Schweinfurt, was the first King of Bohemia as of 15 June 1085, his royal title granted as a lifetime honorific from Holy Roman Emperor Henry IV that did not establish a hereditary monarchy.
Relevant evidence: Yes