Frederick Christian, Margrave of Brandenburg-Bayreuth
Frederick Christian of Brandenburg- Bayreuth( 17 July 1708 in Weferlingen – 20 January 1769 in Bayreuth), was a member of the House of Hohenzollern and Margrave of Brandenburg- Bayreuth.
Christian Heinrich, Margrave of Brandenburg-Bayreuth-Kulmbach
Christian Heinrich of Brandenburg-Bayreuth-Kulmbach (Bayreuth, 29 July 1661 – Weferlingen, 5 April 1708), was a German prince and member of the House of Hohenzollern and nominal Margrave of Brandenburg-Bayreuth-Kulmbach.
Frederick, Margrave of Brandenburg-Bayreuth
Frederick, Margrave of Brandenburg- Bayreuth( May 10, 1711 in Weferlingen – February 26, 1763 in Bayreuth), was a member of the House of Hohenzollern and Margrave of Brandenburg- Bayreuth.
He was the eldest son of Georg Frederick Karl, nominal Margrave of Brandenburg- Bayreuth- Kulmbach, by his wife Dorothea of Schleswig- Holstein- Sonderburg- Beck.
Erdmann August, Hereditary Prince of Brandenburg-Bayreuth
Erdmann August of Brandenburg- Bayreuth( b. Bayreuth, 8 October
1615- d. Hof, 6 February 1651), was a member of the House of Hohenzollern and Hereditary Margrave( German:" Erbmarkgraf") of Brandenburg- Bayreuth.
He was the seventh of the nine children of Christian, Margrave of Brandenburg- Bayreuth by his wife, Marie of Prussia.
In fact, he was the third- born son but the only one to survive into adulthood; his two older brothers Georg Frederick( b. and d. 1608) and Christian Ernst( b. 1613- d. 1614) died long before his own birth.
In Ansbach on 8 December 1641, Erdmann August married the Margravine Sophie of Brandenburg- Ansbach, who was also his first cousin( daughter of Joachim Ernst, Margrave of Brandenburg- Ansbach, his father's brother).
They had only one son: Sophie died on 3 December 1646.
Erdmann August himself died four years later, aged thirty- five, in the middle of the preparations of his wedding with Sophie Agnes of Mecklenburg- Schwerin.
Because he predeceased his father, his son Christian Ernst succeeded as Margrave of Brandenburg- Bayreuth in 1655.
Christian, Margrave of Brandenburg-Bayreuth
Christian, Margrave of Brandenburg-Bayreuth (30 January 1581 in Cölln – 30 May 1655 in Bayreuth) was a member of the House of Hohenzollern and Margrave of Brandenburg-Kulmbach
(later renamed "Brandenburg-Bayreuth").
He was the eldest of eleven children born to John George, Elector of Brandenburg by his third wife Princess Elisabeth of Anhalt-Zerbst.
Georg Albrecht, Margrave of Brandenburg-Bayreuth-Kulmbach
Georg Albrecht of Brandenburg-Bayreuth (Bayreuth, 20 March 1619 – Schretz, 27 September 1666), was a German prince and member of the House of Hohenzollern.
He was the eighth of the nine children of Christian, Margrave of Brandenburg-Bayreuth, by his wife, Marie of Prussia.
He was last child of his parents who survived into adulthood; his younger brother Frederick William, born in 1620, lived only one day.
Casimir, Margrave of Brandenburg-Bayreuth
Casimir( or Kasimir) of Brandenburg- Bayreuth( 27 December 1481 – 21 September 1527) was Margrave of Bayreuth or Margrave of Brandenburg- Kulmbach from 1515 to 1527.
Elisabeth of Anhalt-Zerbst
Elisabeth of Anhalt-Zerbst (15 September 1563 – 8 November 1607) was a princess of Anhalt by birth and Electress of Brandenburg by marriage.
George Frederick Charles, Margrave of Brandenburg-Bayreuth
George Frederick Charles, Margrave of Brandenburg- Bayreuth( 19 June 1688 at Oberzulzbürg Castle, near Mühlhausen – 17 May 1735 in Bayreuth), was a German prince, member of the House of Hohenzollern, nominal Margrave of Brandenburg- Bayreuth- Kulmbach( 1708 – 35) and Margrave of Brandenburg- Bayreuth( 1726–35).
George William, Margrave of Brandenburg-Bayreuth
George William of Brandenburg- Bayreuth( German:" Georg Wilhelm"; 26 November 1678 in Bayreuth – 18 December 1726 in Bayreuth) was a member of the House of Hohenzollern and Margrave of Brandenburg- Bayreuth.

Question: When was Christian, Margrave Of Brandenburg-Bayreuth's mother born?
Answer: 15 September 1563