Question: Who is William Vii Of Jülich, 1St Duke Of Berg's paternal grandmother?
Sentence (from "Adolf, Duke of Jülich-Berg"): Adolf also began a year- long hereditary war against the House of Egmond for the dukedom of Guelders but could not win even with financial support from Sigismund, Holy Roman Emperor, who supported Adolf in this fight despite Adolf's opposition to Sigismund's coronation at Aachen in 1414.
Relevant evidence: No