John George I, Duke of Saxe-Eisenach
Member of the House of Wettin
Johann Georg I, Duke of Saxe-Eisenach.
He was the fifth but third surviving son of Wilhelm, Duke of Saxe-Weimar and Eleonore Dorothea of Anhalt-Dessau.
After the death of his father, his older brother Johann Ernst II inherited Weimar, and his... Wikipedia
Born: July 12, 1634, Weimar, Germany
Died: September 19, 1686 (age 52 years), Marksuhl, Germany
Partner: Johannetta, Countess of Sayn-Altenkirchen (1661–)