Question: Who is Gerhard Vi Of Jülich, Count Of Berg And Ravensberg's mother-in-law?
Sentence (from "Sophie of Saxe-Lauenburg"): Sophie of Saxe- Lauenburg( born: before 1444; died: 9 September 1473) was a German regent, Duchess of Jülich- Berg by marriage to Gerhard VIII of Jülich- Berg, and regent of Jülich, Berg and Ravensberg for her eldest son William IV from 1456 until 1473.
Relevant evidence: No