Question: Who is Nicholas I Of Opole's paternal grandfather?
Sentence (from "Louis of Opole"): Louis of Opole( b. 1450 – d. by 4 September 1476), was a Duke of Opole- Brzeg- Strzelce- Niemodlin during 1466 – 1476( as co-ruler of his father) and briefly in 1476( with his brothers as co-rulers).
Relevant evidence: No