Question: Who is the paternal grandfather of Bolko Iii Of Strzelce?
Sentence (from "Bolko IV of Opole"): Bolko IV of Opole( 1363/ 67 – 6 May 1437), was a Duke of Strzelce and Niemodlin during 1382 – 1400( with his brothers as co-rulers), Duke of Opole from 1396( until 1400 with his brother as co-ruler, except Olesno).
Relevant evidence: No