Question: Who is Gerhard Vi Of Jülich, Count Of Berg And Ravensberg's mother-in-law?
Sentence (from "Gerhard VI of Jülich, Count of Berg and Ravensberg"): Gerhard was subsequently married about 1344 to Margaret of Ravensberg, heiress of Berg and Ravensberg (died 13/19 February 1389), daughter of Otto IV, Count of Ravensberg and Margaret of Berg.
Relevant evidence: Yes