Leszek II the Black
According to archaeologists, first human settlements appeared in today Wolbórz in c. 4000 BC. In early times of the Kingdom of Poland, Wolbórz emerged as a center of local administrative unit called opole, which was later turned into a castellany. In the 1120s, Wolbórz became one of seats of Bishops of Kujawy. By that time, it already was an important trade center, which was confirmed in 1273, when Wolbórz was granted Środa Śląska town charter, by Duke Leszek II the Black.