| Leopold III | |||||
|---|---|---|---|---|---|
Early 19th century portrait | |||||
| Prince, then Duke of Anhalt-Dessau | |||||
| Reign | 16 December 1751 – 9 August 1817 | ||||
| Predecessor | Leopold II | ||||
| Successor | Leopold IV | ||||
| Regent | Dietrich of Anhalt-Dessau | ||||
| Born | (1740-08-10)10 August 1740 Dessau,Anhalt | ||||
| Died | 9 August 1817(1817-08-09) (aged 76) Luisium Castle, nearDessau,Anhalt | ||||
| Spouse | |||||
| Issue | Frederick, Hereditary Prince of Anhalt-Dessau | ||||
| |||||
| House | Ascania | ||||
| Father | Leopold II | ||||
| Mother | Gisela Agnes of Anhalt-Köthen | ||||
| Religion | Lutheranism | ||||
Leopold III Frederick Franz, Duke of Anhalt-Dessau (10 August 1740 – 9 August 1817), known as "Prince Franz" or "Father Franz", was aGermanprince of theHouse of Ascania. From 1751 until 1807 he wasreigning prince of thePrincipality ofAnhalt-Dessau and from 1807 the firstDuke of theDuchy of Anhalt-Dessau.
A strong supporter of theEnlightenment, Leopold undertook numerous reforms in his principality and made Anhalt-Dessau one of the most modern and prosperous of the small German states. AnAnglophile, Leopold also extended and altered the old gardens ofOranienbaum that were laid out in Dutch style to create the first and largest of theEnglish parks of his time, renamed theDessau-Wörlitz Garden Realm.
Leopold was born atDessau as the eldest son of the laterLeopold II, Prince of Anhalt-Dessau, by his wifeGisela Agnes, daughter ofLeopold, Prince of Anhalt-Köthen.
After having lost both parents in 1751 (his mother on 20 April and his father on 16 December), the eleven-year-old Leopold inherited Anhalt-Dessau under the regency of his uncle,Prince Dietrich.
Following in the footsteps of his grandfather and father, Leopold joined thePrussian Army. After theBattle of Kolín (18 June 1757), he was impressed so negatively by the spectacle of warfare that he resigned from the army and declared the neutrality of Anhalt-Dessau.

In 1758 he was declared of age and assumed the government of his lands.
AnAnglophile and strong supporter of theEnlightenment, Leopold took special interest in the education of the population of his principality in science and nature. His numerous reforms in the areas of education, health care, social services, roads, agriculture, forestry, and industry made Anhalt-Dessau one of the most modern and prosperous of the small German states.
The most conspicuous of his improvements included planting fruit trees along dykes and the construction of beautiful buildings.[1] However his reforms included public works programs repairing dykes destroyed by flooding, providing social housing, education, sanitation, the first public parks, burial grounds irrespective of social rank, as well as liberal policies towards the Jewish community, including allowing for the founding of a Jewish school and the first Jewish newspaper in Germany.[2]
He engagedFriedrich Wilhelm von Erdmannsdorff to buildWörlitz Palace (1769–1773), the firstNeoclassical building in Germany. In 1774 Leopold engaged von Erdmannsdorff to construct a small residence with a small English park as a gift to his wife; in her honor, the castle took the nameSchloss Luisium.[3][4]
Leopold also extended and altered the old gardens ofOranienbaum that were laid out in Dutch style to create the first and largest of theEnglish parks of his time, renamed the Dessau-Wörlitz Garden Realm.
In 1782, Leopold was tried by theFürstenbund for his opposition to Prussian hegemony. In 1806 he was invited to Paris byNapoleon, who was impressed by his reputation. Leopold was one of the last princes to join theConfederation of the Rhine on 18 April 1807. On the other hand, despite his differences with the Prussian crown, he offered the Prussian rebel MajorFerdinand von Schill an honorable reception in Dessau on May 2, 1809.
Leopold was elevated to the rank of duke in 1807. As the head of the senior Anhalt branch, he could not earlier by etiquette receive his kinsmen, the Princes ofAnhalt-Köthen andAnhalt-Bernburg, who were raised to that rank before him. He received the title by paying a considerable sum of money to the Emperor shortly before the dissolution of theHoly Roman Empire in 1806, just as the prince of Anhalt-Bernburg had done before him.
In 1812, Leopold became regent of the duchy of Anhalt-Köthen during the minority ofDuke Louis Augustus Karl Frederick Emil.
Leopold died after a fall from his horse atSchloss Luisium, near Dessau, in 1817. He was succeeded by his eldest grandsonLeopold IV, because his son, theHereditary Prince Frederick, had predeceased him.

InCharlottenburg on 25 July 1767 Leopold married his cousinLouise Henriette Wilhelmine (b.Różanki,Brandenburg, 24 September 1750 – d. Dessau, 21 December 1811), daughter ofFrederick Henry, Margrave of Brandenburg-Schwedt, by his wifeLeopoldine Marie of Anhalt-Dessau, a sister of his father. They had two children:
He also had ten illegitimate children:[5]
| Ancestors of Leopold III, Duke of Anhalt-Dessau | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Leopold III, Duke of Anhalt-Dessau Born: 10 August 1740 Died: 9 August 1817 | ||
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| Preceded by | Prince of Anhalt-Dessau 1751–1817 | Succeeded by |