Anne Catherine was born in Halle (Saale) and raised in Wolmirstedt. Her parents were Joachim Frederick, Margrave of Brandenburg and his first wife Catherine of Brandenburg-Küstrin. Christian met her on his journey in Germany in 1595 and decided to marry her.
Marie Anna of Saxony, Grand Duchess of Tuscany (15 November 1799 – 24 March 1832), (full name: Maria Anna Carolina Josepha Vincentia Xaveria Nepomucena Franziska de Paula Franziska de Chantal Johanna Antonia Elisabeth Cunigunde Gertrud Leopoldina), was a princess of Saxony.
Anne, Duchess of Brittany in her own right, is the only woman to have been Queen Consort of France twice. She was the wife of King Charles VIII and the second of the three wives of King Louis XII. Anne was the daughter of François II, Duke of Brittany. Upon the death of her father in1488, Anne became the Duchess of Brittany in her own right.