Who married Beatrice of Bavaria?

Beatrix of Bavaria (also of Brandenburg, of Wittelsbach; died 1359) was Queen of Sweden as the wife of King Erik Magnusson (1339–1359) who co-ruled Sweden with his father King Magnus Eriksson.

Erik Magnusson (1339 – 20 June 1359), sometimes known as Erik XII, was King of Sweden and lord of Scania in 1344–1359. He was a co-ruler with his father, King Magnus Eriksson, from 1356 until his death in 1359.