Landgraviate of Hesse-Darmstadt

Landgraviate of Hesse-Darmstadt
*Landgrafschaft Hessen-Darmstadt* (German)
Landgraviate of Hesse-Darmstadt Landgrafschaft Hessen-Darmstadt (German)
1567–1806
	Military banner; (1756–1763) Coat of arms; (1736–1804)
	Louis X
Historical era	Napoleonic Wars
• Established	1567
• Grand Duchy	1806
Preceded by	Succeeded by
	Landgraviate of Hesse
Grand Duchy of Hesse

The Landgraviate of Hesse-Darmstadt (

State of the Holy Roman Empire, ruled by a younger branch of the House of Hesse. It was formed in 1567 following the division of the Landgraviate of Hesse among the four sons of Landgrave Philip I

.

The residence of the landgraves was in Darmstadt, hence the name. As a result of the Napoleonic Wars, the landgraviate was elevated to the Grand Duchy of Hesse following the Empire's dissolution in 1806.

Geography

Like many petty German states, the landgraviate comprised a number of disconnected pockets of land (exclaves). These included the southern

Battenberg as well as the exclave of Vöhl in Lower Hesse

.

History

The Landgraviate of Hesse-Darmstadt came into existence in 1567, when George, youngest of the four sons of Landgrave Philip I "the Magnanimous", received the Hessian lands in the former upper County of Katzenelnbogen. His eldest brother William IV received the Landgraviate of Hesse-Kassel, while the second son Louis IV obtained Hesse-Marburg, and the third Philipp II became Landgrave of Hesse-Rheinfels.

Hessian War

The Hesse-Rheinfels line became extinct on Philip's death in 1583. When, in 1604, the childless Landgrave Louis IV of Hesse-Marburg died at

Lutheran Hesse-Darmstadt, led to a bitter, decades-long rivalry. Because the University of Marburg had become Calvinist under the rule of Landgrave Maurice of Hesse-Kassel, his cousin Louis V of Hesse-Darmstadt founded the Lutheran University of Giessen

in 1607.

The inheritance conflict was continued in the broader context of the Thirty Years' War, in which Hesse-Kassel sided with the Protestant estates and Hesse-Darmstadt sided with the Habsburg emperor. The Hesse-Homburg and Hesse-Rotenburg estates seceded from the opponents in 1622 and 1627. Though Hesse-Darmstadt and Hesse-Kassel reached an agreement in 1627, the quarrels rekindled, resulting inter alia in the Siege of Dorsten and culminating in a series of open battles from 1645, when the Kassel Landgravine Amalie Elisabeth besieged Marburg. The conflict was finally settled on the eve of the 1648 Peace of Westphalia, more than eighty years after the division of the estates. Large parts of the disputed Upper Hesse territory, including Marburg, fell to the elder Kassel line, while Hesse-Darmstadt retained Giessen and Biedenkopf.