Question: Who is Jarosław, Duke Of Opole's paternal grandfather?
Sentence (from "Nicholas I of Opole"): Nicholas I of Opole( – 3 July 1476) was a duke of Opole since 1437( until 1439 with his brother as co-ruler), Duke of Brzeg from 1450, ruler over Kluczbork from 1451 and Duke of Strzelce, Niemodlin and Olesno from 1460.
Relevant evidence: No