Margaret of Brandenburg, Duchess of Pomerania  Margaret of Brandenburg (1511 – after 3 November 1577) was a Princess of Brandenburg by birth and by marrying first a duke of Pomerania and later a prince of Anhalt. Margaret was the youngest daughter of the Elector Joachim I of Brandenburg (1484–1535) from his marriage to Elisabeth (1485–1555), daughter of King John of Denmark. She married her first husband on 23 January 1530 in Berlin Duke George I of Pomerania (1493–1531). She brought a dowry of into the marriage, enabling George I to transfer a jointure consisting of the districts of Barth, Damgarten, Tribsees, Grimsby and Klempenow to her. The marriage had apparently been agreed during negotiations at Grimnitz Castle about the constitutional relationship between Brandenburg and Pomerania. George I died a year after the marriage and Margaret enjoyed the revenue from het wittum for only three years. She was quite unpopular in Pomerania and when Prince John IV of Anhalt asked for her hand, her stepson Philip I, Duke of Pomerania had to levy a special tax to pay her dowry and redeem her jointure. Margaret and George had a posthumous child, a girl named Georgia. Georgia went with her mother to Anhalt, but returned to Pomerania when she was eight years old. Margaret succeeded in tough negotiations with her stepson, Philip I, to delay her return until May 1543. Her second husband was on 15 February 1534 in Dessau prince John V of Anhalt-Zerbst (1504–1551). Her marriage to John soon proved unhappy. Margaret fled from her husband to her wittum, Roßlau Castle. Martin Luther tried to mediate between John and Margaret. He visited her at Roßlau Castle and blamed her for leaving her husband "cheekily". This started a fierce war of words. Luther later reported: "I must have told her clearly enough, until I was attracting her wrath". John eventually accused Margaret of marital infidelity and imprisoned her in 1550. John's personal physician was tortured to make him confess a relationship with the princess, but he did not budge. She managed to escape from her prison and after a number of adventures arrived half-naked and robbed at the court of her cousin King Christian III of Denmark in Copenhagen.