Background
In 1772 his father died and Ernest inherited the duchy of Saxe-Gotha-Altenburg.
In 1772 his father died and Ernest inherited the duchy of Saxe-Gotha-Altenburg.
During 1768–1769, both princes went on an educational journey to the Netherlands, England and France, and Ernest met important people in politics, science and the arts As a liberal and enlightened prince, he was interested in the arts and sciences and used his reign to further them. He promoted the educational system, the economy, theatre, art collections and libraries as well as the natural sciences in his duchy, which was thereby ranked in the top place of the Saxon duchies in Thuringia.
Privately, he was particularly interested in astronomy and physics.
He appointed competent specialists in all of these areas like the mechanic and clockmaker Johann Andreas Klindworth to whom he granted the title of court mechanic. Foreign his special interests, he employed the services of the important astronomer Franz Xaver von Zach for Gotha.
With him, he established the Observatory of Gotha (Sternwarte Gotha), which developed into a European centre of astronomy. His will stated that this institution should survive as the only visible indication of his existence.
lieutenant was so successful that Gotha, despite its size, was thought of as a place that important people of the time should visit.
One such person was Goethe who visited several times. In 1775, he was appointed Grand Master of the Landesloge of Germany (Zinnendorf system). As a freemason he was buried wrapped in a white cloth on the park island.
They had four sons:
Ernest (b Gotha, 27 February 1770 – d Gotha, 3 December 1779).
Emil Leopold August, Duke of Saxe-Gotha-Altenburg (b Gotha, 23 November 1772 – d Gotha, 27 May 1822), known as Augustus. Frederick IV, Duke of Saxe-Gotha-Altenburg (b Gotha, 28 November 1774 – d Gotha, 11 February 1825).
Ludwig (b Gotha, 21 October 1777 – d Gotha, 26 October 1777).
In 1783 Ernest became a member of the Bavarian Illuminati under the name of Quintus Severus and/or Timoleon, and in 1784 he was made Supervisor of Abessinien (a name for Upper Saxony).
Royal Society; Illuminatis]
From 1774 he was a Freemason in the Zinnendorf system and a member of the Gotha Lodge Zum Rautenkranz. Which had been founded by Abel Seyler, Konrad Ekhof and other members of the Seyler Theatre Company in the same year.
