Queen of Sweden. She was originally Princess of Bavaria and a daughter of the Roman-German Emperor Lewis IV, belonging to the powerful Wittelsbach Dynasty. Her mother was a Princess of Holland, and one of her brothers married a sister of King Waldemar IV Otherday of Denmark. At the age of twelve she became the consort of Crown Prince Eric (XII), the elder son of King Magnus and Queen Blanche of Norway and Sweden. In 1357 her husband revolted fully against his father's rule, having begun to do so even when she married him the previous year. Eric the Rebel now proclaimed himself King of Sweden, jointly with his father, and was recognized as such. His younger brother Hacon (VI) was already sharing the throne of Norway with their father. Hacon's consort was Beatrice's relative (daughter of above Waldemar), later in widowhood known as Margaret (I) the Great. Beatrice and Eric now shared the Swedish throne with her in-laws. Controversial and contradictory information, from contemporary sources at odds with one another, begin to cloud the telling of the story of the young royal couple, including references to a coronation of the two, upon which doubt has been cast by some historians. In any case, their reign was a short one of a mere two years, as King Eric was struck down by pestilence and died in south-central Sweden in the summer of 1359. Queen Beatrice died of the same or a similar illness later that year, and a son, Eric, who was delivered hastily by caesarian section after the Queen's death, also perished right after birth. She and Eric may have had another small child that also died at the time. Vicious stories that the whole young family was murdered by poison at the instigation of Queen Blanche, who is to have resented them, must be taken in the context of all the extensive slander on various subjects leveled against Magnus and Blanche for political reasons. Queen Beatrice was one of the most dynastically prominent European princesses ever to ascend to the throne way up north in Sweden. It is unlikely that she was the object of anything other than the appreciation of her contemporaries.