Marie of Prussia was a Prussian duchess by birth and Margravine of Brandenburg-Bayreuth by marriage.
Background
Born in Königsberg, Marie was the second daughter of Duke Albert Frederick of Prussia (1553–1618) from his marriage to Marie Eleonore of Cleves (1550–1608), daughter of Duke William the Rich of Jülich-Cleves-Berg. The princess grew up with her sisters in Königsberg Castle.
Career
Since her father left no male heirs, a dispute arose between Prussia and Jülich-Cleves-Berg about Mary"s compensation. In 1613, Marie acquired the manors of Schreez and Culmbach in Haag (Oberfranken). She used the income from these manors to expand Unternschreez Castle, her Wittum.
Mary and her family in Franconia had to flee their homes during the Thirty Years" War, and the manors were lost.
Marie died in 1649 and was buried in the City Church in Bayreuth. She had donated the high altar in this church.
Elisabeth Eleonore (* / † 1606)
George Frederick (* / † 1608)
Anna Maria (1609–1680)
married in 1639 Prince Johann Anton I von Eggenberg (1610-1649)
Magdalene Sibylle (1612–1687)
married in elector in 1638 John George II of Saxony (1613-1680)
Agnes Sophie (* / † 1611)
Christian Ernest (1613–1614)
Erdmann August (1615–1651), Hereditary Prince of Brandenburg-Bayreuth
married in 1641 princess Sophie of Brandenburg-Ansbach (1614-1646)
Georg Albrecht (1619–1666), (not ruling) Margrave of Brandenburg-Kulmbach (junior line)
married firstly in 1651 Princess Marie Elisabeth of Holstein-Sonderburg-Glücksburg (1628-1664)
married secondly in 1665 Countess Marie Sophie of Solms-Baruth (1626-1688)
Frederick William (* / † 1620).