Louis V of Hesse-Darmstadt (; 24 September 1577 – 27 July 1626) was the Landgrave of Hesse-Darmstadt from 1596 to 1626.

Early life He was born on 24 September 1577 as the son of George I, Landgrave of Hesse-Darmstadt and Magdalene of Lippe, daughter of Bernhard VIII, Count of Lippe.

Biography In 1604 he inherited a part of Hessen-Marburg after the death of Louis IV of Hesse-Marburg who was childless. The other half went to Maurice of Hesse-Kassel (or Hesse-Cassel), but since Maurice was a Calvinist, Ludwig claimed a right on the whole of Hesse-Marburg. Lutheran professors of the University of Marburg who refused to convert to Calvinism founded in 1607 the University of Gießen which was named Ludoviciana.

This led to a conflict during the Thirty Years' War, between Louis V, who stood on the side of the Emperor, and Maurice, who was on the side of the Protestants. Hesse-Darmstadt suffered severely from the ravages from the Swedes during the conflict.

The Landgrave died in 1626 and he was succeeded by George II, Landgrave of Hesse-Darmstadt.

In 1722, Johann Georg Liebknecht, an astronomer at the University of Gießen, named a star, which he thought was a planet, Sidus Ludoviciana after Ludwig V.

Issue Louis V married Magdalene of Brandenburg, daughter of John George, Elector of Brandenburg and his third wife, Elisabeth of Anhalt-Zerbst. They had issue:

Elisabeth Magdalene of Hesse-Darmstadt (23 April 1600, Darmstadt – 9 June 1624, Montbéliard), who married Louis Frederick, Duke of Württemberg-Montbéliard. Anne Eleonore of Hesse-Darmstadt (30 July 1601 – 6 May 1659) Sofie Agnes of Hesse-Darmstadt (12 January 1604, Darmstadt – 8 September 1664, Hilpoltstein) married Johann Friedrich, Count Palatine of Sulzbach-Hilpoltstein. George II, Landgrave of Hesse-Darmstadt (17 March 1605 – 11 June 1661) Juliane of Hesse-Darmstadt (14 April 1606, Darmstadt – 15 January 1659 Hanover) Amalie of Hesse-Darmstadt (20 June 1607 – 11 September 1627) never married John, Landgrave of Hesse-Braubach (17 June 1609, Darmstadt – 1 April 1651, Ems) Henry of Hesse-Darmstadt (1 April 1612, Darmstadt – 21 October 1629) Never married or had children. Hedwig of Hesse-Darmstadt (22 June 1613, Darmstadt – 2 March 1614) Died young Louis of Hesse-Darmstadt (12 September 1614, Darmstadt – 16 September 1614) Died in infancy Frederick of Hesse-Darmstadt (28 February 1616, Darmstadt – 19 February 1682)

Ancestry

References Wikisource: Allgemeine Deutsch Biographie "Ludwig V." (in German)