Question: Who is Gerhard Vi Of Jülich, Count Of Berg And Ravensberg's maternal grandfather?
Sentence (from "Gerhard VI of Jülich, Count of Berg and Ravensberg"): Gerhard VI of Jülich, Count of Berg and Ravensberg (– 18 May 1360) was the son of William V, Duke of Jülich and Joanna of Hainaut.
Relevant evidence: Yes