Ernest Frederick, Duke of Saxe-Coburg-Saalfeld, was a Duke of Saxe-Coburg-Saalfeld. Wikipedia
Born: March 8, 1724, Saalfeld, Germany
Died: September 8, 1800 (age 76 years), Coburg, Germany
Great-grandparents: Ernest I, Duke of Saxe-Gotha, Frederick I, Duke of Saxe-Gotha-Altenburg, Princess Elisabeth Sophie of Saxe-Altenburg, and more