Konrad I of Oleśnica

Konrad I of Oleśnica was a Duke of Żagań and Ścinawa during 1309–1312, Duke of Oleśnica, Namysłów, Gniezno and Kalisz during 1312–1313, Duke of Kalisz during 1313–1314 (alone), Duke of Namysłów from 1313 (alone) and Duke of Oleśnica from 1321 until his death (alone).