Question: Who is Alexander Of Masovia's paternal grandfather?
Sentence (from "Alexander of Masovia"): He was Bishop of Trento since 1425, titular Patriarch of Aquileia since 1439, Cardinal nominated by Antipope Felix V as titular of the diocese of St. Lawrence at Damascus ("San Lorenzo in Damaso") since 1440, titular Bishop of Chur since 1442 and rector at St. Stephen's Cathedral, Vienna since 1442, a diplomat.
Relevant evidence: No