Question: Who is the paternal grandfather of Bolesław Iv The Curly?
Sentence (from "Wierzchoslawa Ludmilla of Greater Poland"): Wierzchoslawa Ludmilla of Greater Poland( b. bef. 1153 – d. bef. 1223), was a Polish princess member of the House of Piast, by marriage Lady of Bitsch and during 1205- 1206 Duchess of Lorraine.
Relevant evidence: No