Bernard (II) of Świdnica (Bernard Świdnicki) (c. 1291 – 6 May 1326) was a Duke of Jawor-Lwówek-Świdnica-Ziębice during 1301–1312 (with his brothers as co-rulers), of Świdnica-Ziębice during 1312–1322 (with his brother as co-ruler), and sole Duke of Świdnica since 1322 until his death.
Bolko II of Opole (Bolesław II opolski; before 1300 – 21 June 1356), was a Duke of Opole from 1313 (with his brother as co-ruler until 1323).
The Duke of Silesia was the sons and descendants of the Polish Duke Bolesław III Wrymouth.
Jan IV of Oświęcim (Jan IV oświęcimski; 1426/1430 – by 21 February 1497), was a Duke of Oświęcim during 1434–1456 (until 1445 with his brothers as co-rulers) and Duke of Gliwice from 1465 to 1482.
Kunigunde of Poland (c. 1298 – 9 April 1331) was a daughter of Władysław I the Elbow-high and his wife Jadwiga of Greater Poland.
Przemysław of Toszek (Przemysław Toszecki) (1425 – December 1484) was a Duke of Oświęcim during 1434–1445 (with his brothers as co-rulers) and Duke of Toszek since 1445 until his death.
Vladislaus II of Opole (Władysław Opolczyk, Wladislaus von Oppeln, Oppelni László, Владислав Опольчик) (ca. 1332 – 18 May 1401) was a Duke of Opole from 1356 (as a Bohemian vassal), Count palatine of Hungary during 1367–1372, ruler over Lubliniec since 1368, Duke of Wieluń during 1370–1392, ruler over Bolesławiec from 1370 (only for his life), Governor of Galicia–Volhynia during 1372–1378, ruler over Pszczyna during 1375–1396, Count palatine of Poland in 1378, Duke of Dobrzyń and Kujawy during 1378–1392 (as a Polish vassal), ruler over Głogówek from 1383 and ruler over Krnov during 1385–1392.
Wenceslaus I of Zator (Wacław I Zatorski; – before 29 July 1468), was a Duke of Oświęcim during 1434–1445 (with his brothers as co-rulers) and Duke of Zator from 1445 until his death.