Bolesław of Oleśnica [SEP] date of death
Bolesław of Oleśnica
Bolesław of Oleśnica (; c. 1295 – before 23 April 1321), was a Duke of Żagań, Ścinawa, etc., during 1309-1312 (with his brothers as co-rulers), Duke of Oleśnica, Namysłów, Gniezno and Kalisz during 1312-1313 (with his brother as co-ruler), Duke of Gniezno during 1313-1314 (alone) and Duke of Oleśnica since 1313 until his death (alone).
He was the third son of Henry III (I)
vested Koźle with town privileges, had walls erected. After Casimir was succeeded by his son Władysław in 1312, Koźle remained the capital of an autonomous duchy, ruled by the Bytom branch of the Silesian Piasts until the death of Duke Bolesław in 1355. King Charles IV adjudicated the reverted Bohemian fief to the Piast duke Konrad I of Oleśnica (Oels), whereafter the town remained a possession of the Oleśnica line until it became extinct in 1492.
Again purchased by the Opole duke Jan II the Good in 1509, the