Who married Mestwin II, Duke of Pomerania?

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.

Sulisława (died after 25 December 1294) was the daughter of a Pomeranian knight.

She was originally a nun in Słupsk, but in about 1285, she became the mistress of Mestwin II. On 26 August 1288, after his divorce from Euphrosyne of Opole, Mestwin married Sulisława.

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.