 By 1346, after the death of his last surviving uncle, Duke Henry I of Jawor, Bolko II inherited his domains, the Duchies of Jawor and Lwówek.Soon before, Bolko II's younger brother and co-ruler Henry II died, leaving only one daughter, Anna.Bolko II, as the closest male relative, became Anna's legal guardian and began to consider his niece as heiress to all his lands.