Anna Miełżyńska was the great-grandmother of which Queen consort of the Polish-Lithuanian Commonwealth?
Catherine Opalińska Catherine Opalińska (Polish: "Katarzyna Opalińska" ; 13 October 1680 – 19 March 1747) was Queen consort of the Polish-Lithuanian Commonwealth twice and Duchess consort of Lorraine through her marriage with Stanisław I of Poland.
Hedwig Jagiellon (1408–1431) Hedwig Jagiellon (Lithuanian: "Jadvyga Jogailaitė" , Polish: "Jadwiga Jagiellonka" ; 8 April 1408, Kraków – 8 December 1431, Kraków) was a Polish and Lithuanian princess, and a member of the Jagiellon dynasty. For most of her life she, as the only child of Wladyslaw Jagiello, was considered to be heiress of the Polish and Lithuanian thrones. After the birth of Jagiello's sons in 1424 and 1427, Hedwig had some support for her claims to the throne. She died in 1431 amidst rumors that she was poisoned by her stepmother Sophia of Halshany.