Question: Who was the grandfather of the Bonne de Luxembourg on her father's side?
Sentence (from "John of Bohemia"): John the Blind (Luxembourgish: "Jang de Blannen" ; German: "Johann der Blinde von Luxemburg" ; ; 10 August 1296 – 26 August 1346) was the Count of Luxembourg from 1309 and King of Bohemia from 1310 and titular King of Poland.
Relevant evidence: No