Magdalene Sibylle of Saxony

Magdalene Sibylle of Saxony was the Princess of Denmark from 1634 to 1647 as the wife of PrinceElect Christian of Denmark, and the Duchess consort of SaxeAltenburg as the wife of Frederick Wilhelm II, Duke of SaxeAltenburg.

Magdalene Sibylle was born in Dresden, the third surviving daughter and sixth surviving child of John George I, Elector of Saxony, and Magdalene Sibylle of Prussia. Her five elder siblings were Sophia Eleonore, Marie Elisabeth, Johann Georg, August, and Christian her only younger sibling was Maurice.

Source: Wikipedia