Princess Sophie Caroline of Brunswick-Wolfenbüttel
Duchess Sophie Caroline Marie of Brunswick-Wolfenbüttel (7 October 1737 – 22 December 1817) was Margravine of Brandenburg-Bayreuth by marriage to Frederick, Margrave of Brandenburg-Bayreuth.
She was the eldest daughter of Charles I, Duke of Brunswick-Wolfenbüttel, and his wife, Philippine Charlotte of Prussia, sister of Frederick the Great.
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.
Frederick William I of Prussia
Frederick William I (14 August 1688 – 31 May 1740), known as the "Soldier King" , was the King in Prussia and Elector of Brandenburg from 1713 until his death in 1740, as well as Prince of Neuchâtel.
He was succeeded by his son, Frederick the Great.
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.
Marie of Prussia, Margravine of Brandenburg-Bayreuth
Marie of Prussia (23 January 1579 – 21 February 1649) was a Prussian duchess by birth and Margravine of Brandenburg-Bayreuth by marriage.
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.
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.
Margravine Sophie Christine of Brandenburg-Bayreuth
Margravine" Sophie Christine" Louise of Brandenburg- Bayreuth( in German:" Sophie Christine Luise, Markgräfin von Brandenburg- Bayreuth"; 4 January 1710 in Schloss Weferlingen, Weferlingen – 13 June 1739 in Brussels, Austrian Netherlands) was a member of the Brandenburg- Bayreuth line of the House of Hohenzollern and a Margravine of Brandenburg- Bayreuth by birth.
Through her marriage to Alexander Ferdinand, 3rd Prince of Thurn and Taxis, Sophie Christine was also a member of the Princely House of Thurn and Taxis and Hereditary Princess of Thurn and Taxis.
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).
Wilhelmine of Prussia, Margravine of Brandenburg-Bayreuth
Princess Wilhelmine of Prussia (Friederike Sophie Wilhelmine; 3 July 1709 – 14 October 1758) was a princess of the German Kingdom of Prussia
(the older sister of Frederick the Great) and composer.
She was the eldest daughter of Frederick William I of Prussia and Sophia Dorothea of Hanover, and granddaughter of George I of Great Britain.
In 1731, she married Frederick, Margrave of Brandenburg-Bayreuth.
The baroque buildings and parks built during her reign shape much of the present appearance of the town of Bayreuth, Germany.

Question: When did Wilhelmine Of Prussia, Margravine Of Brandenburg-Bayreuth's father die?
Answer: 31 May 1740