Sigismund Ehrenreich von Redern

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Count Sigismund Ehrenreich von Redern , also Siegmund Ehrenreich von Redern (born September 5, 1719 at Schwante Castle ; † July 1, 1789 in Königsbrück ) was the court marshal of Sophie Dorothea of ​​Hanover , mother of the Prussian King Friedrich II. He also wrote scientific papers Treatises on the improvement of optical instruments, including telescopes .

Life

Daughter Sophie Charlotte Eleonore, later Countess zu Stolberg – Stolberg, portrait by Anton Graff

Sigismund Ehrenreich von Redern comes from the Brandenburg nobility dynasty Redern , who lived in Brandenburg and Pomerania in what was later to be Prussia. His parents were Erasmus Wilhelm von Redern and his wife Catharina Elsbeth von Bredow . Since December 29, 1748 he was married to Marie Jeanne de Horguelin (born September 18, 1727 in Paris, † January 1, 1788 in Berlin), a daughter of Jacques de Horguelin and Louise Jeanne Crommelin . The couple had three children, the sons Wilhelm Jacob (1750-1816) and Sigismund Ehrenreich Johann (1763-1841) and a daughter Sophia (born November 4, 1765, † January 8, 1842), who on February 15, 1790 with married to Count Friedrich Leopold zu Stolberg-Stolberg .

Redern enrolled in law at the University of Halle on February 19, 1738 and was appointed chamberlain in 1743 and court marshal (later: chief court marshal) of the queen mother in 1751; held this office until her death in 1757. Then Redern withdrew to Upper Lusatia . He was lord of the royal lordship of Königsbrück, acquired in 1774, and of the Cosel manor . - On January 17, 1757, Redern was promoted to the rank of Count of Prussia .

In 1741 Redern became a member of the Federation of Freemasons . As an honorary member of the Berlin Academy of Sciences , he was one of its curators from 1751 .

Works

  • Observations sur l'état présent de la dioptrique, sur les moiens de perfectionner les lunettes à réfraction, et sur la découverte qu'on annonce d'un nouveau genre d'objectifs qui les porte au plus haut degré de perfection. Histoire de l'Académie Royale des Sciences et des Belles-Lettres de Berlin, 1759. pp. 89-184. ( Digitized version )
  • Considérations dioptriques. Troisième partie. Application des principes de la théorie établie dans les deux premières parties à la pratique dans la construction des lunettes, pour obtenir la disposition la plus favorable des oculaires. Histoire de l'Académie Royale des Sciences et des Belles-Lettres de Berlin, 1761. pp. 33-40. ( Digitized version )

literature

personal data
SURNAME Redern, Sigismund Ehrenreich from
ALTERNATIVE NAMES Redern, Siegmund Ehrenreich from
BRIEF DESCRIPTION Prussian Grand Marshal and physicist
DATE OF BIRTH September 5, 1719
PLACE OF BIRTH at Schwante Castle
DATE OF DEATH July 1, 1789
Place of death Koenigsbrück