Louis IX, Landgrave of Hesse-Darmstadt

Louis IX of Hesse-Darmstadt (German: "Ludwig") (December 15, 1719 – May 13, 1790) was the Landgrave of Hesse-Darmstadt from 1768 - 1790. He was a son of Louis VIII, Landgrave of Hesse-Darmstadt, and Charlotte of Hanau-Lichtenberg and Müntzenberg.

He was born in Darmstadt on 15 December, 1719. On 12 August, 1741, Louis married Caroline of Zweibrücken, daughter of Christian III, Duke of Zweibrücken. They had five sons and three daughters, including:

*Caroline (1746-1821), married Friedrich V, Landgrave of Hesse-Homburg
*Frederica Louisa (1751-1805), married King Friedrich Wilhelm II of Prussia and became Queen of Prussia
*Louis X (1753-1820), later Grand Duke Louis I
*Amalie (1754-1832), married Karl Ludwig, Hereditary Prince of Baden
*Wilhelmina Louisa (1755-1776), married Grand Duke Pavel Petrovich of Russia, later emperor
*Louisa Augusta (1757-1830), married Karl August, Grand Duke of Saxe-Weimar-Eisenach
*Frederick (1759-1802)
*Christian (1763-1830)

Ancestry

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1= Louis IX, Landgrave of Hesse-Darmstadt
2= Louis VIII, Landgrave of Hesse-Darmstadt
3= Charlotte Christine of Hanau-Lichtenberg
4= Ernest Louis, Landgrave of Hesse-Darmstadt
5= Dorothea Charlotte of Brandenburg-Ansbach
6= Johann Reinhard III of Hanau-Lichtenberg
7= Margravine Dorothea Friederike of Brandenburg-Ansbach
8= Louis VI, Landgrave of Hesse-Darmstadt
9= Elisabeth Dorothea of Saxe-Coburg
10=Albrecht V, Margrave of Brandenburg-Ansbach
11=Sofie Margarete of Oettingen
12=Johann Reinhard II, Count of Hanau
13=Countess Palatine Anna Magdalena of Zweibrucken-Bischweiler
14=Johann Friedrich, Margrave of Brandenburg-Ansbach
15=Margravine Johanna Elisabeth of Baden-Durlach