Question: Who is Frederick Of Cieszyn's paternal grandfather?
Sentence (from "Casimir II, Duke of Cieszyn"): Casimir II of Cieszyn  (– 13 December 1528) was a Duke of Cieszyn since 1477, ruler over Koźle during 1479–1509, since 1493 ruler over Wołów, over Pszczyna during 1498–1517, from 1506 over Opava, Duke of Głogów since 1506 (for life).
Relevant evidence: No