Alexander Ferdinand, 3rd Prince of Thurn and Taxis

Alexander Ferdinand, 3rd Prince of Thurn and Taxis (21 March 1704 – 17 March 1773) was the third Prince of Thurn and Taxis, Postmaster General of the Imperial Reichspost, and Head of the Princely House of Thurn and Taxis from 8 November 1739 until his death in March 1773. Alexander Ferdinand served as Principal Commissioner (Prinzipalkommissar) at the Perpetual Imperial Diet in Frankfurt am Main and Regensburg for Charles VII, Holy Roman Emperor, Francis I, Holy Roman Emperor, and Joseph II, Holy Roman Emperor from 1 February 1743 to 1745 and again from 1748 until 1773.

First marriage
On 11 April 1731, he married Margravine Sophie Christine of Brandenburg-Bayreuth, daughter of George Frederick Charles, Margrave of Brandenburg-Bayreuth and Princess Dorothea of Schleswig-Holstein-Sonderburg-Beck.

Issue

 * 1) Princess Sophie Christine of Thurn and Taxis (8 December 1731 – 23 December 1731)
 * 2) Karl Anselm, 4th Prince of Thurn and Taxis (2 June 1733 – 13 November 1805) married (1) Duchess Auguste of Württemberg married (2) Elisabeth Hildebrand, Frau von Train
 * 3) Princess Luise Auguste Charlotte of Thurn and Taxis (27 October 1734 – January 1735)
 * 4) Prince Friedrich August of Thurn and Taxis (baptized 5 December 1736 – 12 September 1755)
 * 5) Prince Ludwig Franz Karl Lamoral Joseph of Thurn and Taxis (13 October 1737 – 7 August 1738)

Second marriage
On 22 March 1745, he married Louise of Lorraine, daughter of Louis, Prince of Lambesc and Jeanne Henriette de Durfort, on 22 March 1745 in Paris they had no issue.

Third marriage
On n 21 September 1750 in Regensburg, he married Princess Maria Henriette Josepha of Fürstenberg-Stühlingen, daughter of Joseph Wilhelm Ernst, Prince of Fürstenberg and his wife Countess Theresia Anna Maria Eleonore of Waldstein.

Issue

 * 1) Princess Maria Theresia of Thurn and Taxis (born 16 January 1755 – 20 December 1810) married Ferdinand, Count of Ahlefeldt-Langeland
 * 2) Princess Josephine of Thurn and Taxis (born 1 August 1759; died young)
 * 3) Prince Heinrich Alexander of Thurn and Taxis (baptized 14 September 1762; died young)
 * 4) Prince Franz Joseph of Thurn and Taxis (2 October 1764; buried 20 February 1765)
 * 5) Princess Maria Anna Josepha of Thurn and Taxis (baptized 28 Sep 1766 – 10 August 1805)
 * 6) Princess Marie Elisabetha Alexandrina of Thurn and Taxis (30 November 1767 – 21 July 1822) married (1) Karl Joseph, Landgrave of Fürstenberg, married (2) Joseph, Baron of Lasaberg.
 * 7) Prince Maximilian Joseph of Thurn and Taxis (9 May 1769 – 15 May 1831) married Princess Eleonore of Lobkowicz, the Czech branch of the House of Thurn and Taxis descends from this marriage.