Duke of Gniezno Duke of Oleśnica
He was the third son of Henry III (I), Duke of Głogów, by his wife Matilda, daughter of Albert I, Duke of Brunswick-Lüneburg. At the time of his father"s death in 1309, Bolesław succeeded him as ruler of all his lands together with his brothers as co-rulers. However, because he was a minor, was placed under the care of his mother until his majority in 1312.
On 29 February 1312 was made first division of the Duchy: Bolesław and Konrad received the Duchies of Gniezno-Kalisz and Oleśnica-Namysłów as a co-rulers, but one year later, in 1313, they decided to divide their domains: Bolesław obtained Oleśnica and Gniezno as a sole ruler. Since the beginning of their reign, Henry III"s sons faced several complications. Firstly, the pretensions of Władysław I the Elbow-high and the princes of Legnica-Brzeg-Wroclaw (Bolesław III the Generous and Henry VI the Good).
Bolesław died unexpectedly by April 1321 year and was buried in the Piast Mausoleum in the Cistercian monastery of Trzebnica.
