Question: Who is Wenceslaus I Of Zator's paternal grandfather?
Sentence (from "Wenceslaus I of Zator"): Wenceslaus I of Zator (– before 29 July 1468), was a Duke of Oświęcim during 1434–1445 (with his brothers as co-rulers) and Duke of Zator from 1445 until his death.
Relevant evidence: No