Ki vette feleségül Catherine of Mecklenburg-t?

Catherine of Mecklenburg (also Katharina von Mecklenburg) (1487 – 6 June 1561, Torgau), was a German author, and a Duchess of Saxony by marriage to Henry IV, Duke of Saxony. She was the daughter of the Duke Magnus II of Mecklenburg and Sophie of Pomerania-Stettin.

Henry IV the Pious, Duke of Saxony (German: Heinrich der Fromme; 16 March 1473, in Dresden – 18 August 1541, in Dresden) was a Duke of Saxony from the House of Wettin. Succeeding his brother George, Duke of Saxony, a fervent Catholic who sought to extinguish Lutheranism by any means possible, Henry established the Lutheran church as the state religion in his domains.