Quem se casou com Euphrosyne of Opole?

Euphrosyne of Opole (Polish: Eufrozyna opolska) (1228/30 – 4 November 1292) was a Polish duchess and regent.

She was a daughter of duke Casimir I of Opole and his wife Viola, Duchess of Opole, and a member of the House of Piast. She was Duchess of Kuyavia from her first marriage to Casimir I of Kuyavia, and Duchess of Pomerania from her second marriage to Mestwin II, Duke of Pomerania. She acted as regent of the Duchy of Kuyavia during the minority of her son Władysław I the Elbow-high in 1267-1275.

Mestwin II (Polish: Mściwój II or Mszczuj II) (c. 1220 – December 25, 1294) was a Duke of Gdańsk Pomerania, member of the Samborides dynasty. He ruled Gdańsk Pomerania as a sole ruler from 1273 to 1294.

Casimir I^er de Cujavie (en polonais : Kazimierz I kujawski), de la dynastie Piast, est né vers 1211 et mort le 14 décembre 1267. Il est le second fils de Conrad I^er de Mazovie et d’Agafia de Rus.

Il fut duc de Cujavie (1233-1267), duc de Ląd (1239-1261), duc de Wyszogród (à partir de 1242), duc de Sieradz (1247-1261), duc de Łęczyca (1247-1267) et duc de Dobrzyń (1248-1267).