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.
Matilda of Brunswick-Lüneburg Matilda of Brunswick-Lüneburg (Polish: Matylda Brunszwicka-Lüneburga , German: Mechthild von Braunschweig-Lüneburg ) (1276 – 26 April 1318) was a German princess and member of the House of Welf. By birth, she was a duchess of Brunswick-Lüneburg and by marriage Duchess of Glogów, Ścinawa, etc.