Vem gifte sig med Nicholas II, Duke of Opava?

Nicholas II of Opava (also: Nicholas II of Troppau, Nicholas II of Ratibór; Czech: Mikuláš II. Opavský; 1288 – 8 December 1365) was Duke of Opava (German: Troppau) from 1318 to 1365 and Duke of Ratibór from 1337 to 1365 and Burgrave of Kladsko (German: Glatz) from 1350 to 1365 and also chamberlain of the Kingdom of Bohemia.

Anna of Racibórz (Polish: Anna raciborska; b. 1292/98 – d. 1 January/21 August 1340), was a Polish princess member of the House of Piast in the Racibórz branch and by marriage Duchess of Opawa and Racibórz.

She was the second child but eldest daughter of Duke Przemysław of Racibórz by his wife Anna, daughter of Duke Konrad II of Masovia.