Reign 1678–1690 Religion Lutheranism House House of Wettin | Predecessor Bernhard II Name Johann Duke | |
Successor Duchy divided between Saxe-Weimar and Saxe-Eisenach Born 28 March 1675
Jena ( 1675-03-28 ) Father Bernhard II, Duke of Saxe-Jena Mother Marie Charlotte de la Tremoille Died November 4, 1690, Jena, Germany Parents Marie Charlotte de la Tremoille, Bernhard II, Duke of Saxe-Jena Cousins Christian August of Saxe-Zeitz Grandparents William, Duke of Saxe-Weimar, Eleonore Dorothea of Anhalt-Dessau, Henri de La Tremoille Aunts Dorothea Maria of Saxe-Weimar, Duchess of Saxe-Zeitz | ||
Johann Wilhelm, Duke of Saxe-Jena (Jena, 28 March 1675 – Jena, 4 November 1690), was a duke of Saxe-Jena.
He was the youngest but sole surviving son of Bernhard II, Duke of Saxe-Jena by his wife Marie Charlotte, daughter of Henry de La Tremoille, 3rd Duke of Thouars, 2nd Duke of La Tremoille, and Prince of Talmond and Taranto.
Life
When only three years old (1678) he succeeded his father as Duke of Saxe-Jena. In accordance with the testamentary instructions of his father, his uncle, Duke Johann Ernst II of Saxe-Weimar assumed his guardianship and the regency of the duchy; when he died in 1683, another uncle, Duke Johann Georg I of Saxe-Eisenach, assumed the regency. Three years later (1686), the new regent also died, and his cousin (son of the late Duke Johann Ernst II) and brother-in-law (he was married to his eldest and only surviving sister, Charlotte Marie) Duke Wilhelm Ernst of Saxe-Weimar was appointed to the regency.
As Johann Wilhelm lived only fifteen years and failed to reach adulthood, he never governed. With his death the line of the Dukes of Saxe-Jena had become extinct, and the duchy was divided between Saxe-Weimar and Saxe-Eisenach.