Cine s-a căsătorit cu Beatrice of Brandenburg?

Beatrice of Brandenburg (Polish: Beatrycze brandenburska, German: Beatrix von Brandenburg; also Beatrix of Fürstenberg; c. 1270 – before 26 April 1316), was a German princess and a member of the House of Ascania in the Brandenburg branch. By her two marriages she was Duchess of Świdnica and Koźle-Bytom-Siewierz.

She was the second daughter of Otto V the Long, Margrave of Brandenburg-Salzwedel, by his wife Judith of Henneberg, daughter of Count Herman I of Henneberg and heiress of Coburg and Schmalkalden.

Władysław of Bytom (1277/83 – around 8 September 1352), was a Duke of Koźle during 1303-1334, Duke of Bytom from 1316, Duke of Toszek from 1329 and Duke of Siewierz during 1328–1337.

He was the second son of Duke Casimir of Bytom by his wife Helena.

Bolko I di Świdnica, detto il Severo, noto anche come (in tedesco) Bolko I. von Jauer und Schweidnitz, Boleslaw III. von Liegnitz, in polacco Bolko I Surowy, in ceco Boleslav I. Javorsko-Svídnický Surový (1253 circa – 9 novembre 1301), fu duca di Jawor dal 1278 e duca di Löwenberg dal 1286. Egli apparteneva alla dinastia dei Piast. I suoi genitori erano Boleslao II, duca di Slesia, e dal 1248 anche duca di Liegnitz, ed Edvige († 1259), figlia del conte Enrico I di Anhalt.