Johann Georg Adolf, Hereditary Prince of Saxe-Weissenfels

Johann Georg Adolf, Hereditary Prince of Saxe-Weissenfels (17 May 1740 – 10 July 1740). He was the last Hereditary Prince of Saxe-Weissenfels but died before succeeding his father. The last male heir to the Duchy of Saxe-Weissenfels, the  Weissenfels branch of the House of Wettin went extinct when he passed away aged four.

Titles

 * 17 May 1740 – 10 July 1740 Johann Georg Adolf, Hereditary Prince of Saxe-Weissenfels, Duke of Saxony.