Ernest II (German: Ernst August Karl Johann Leopold Alexander Eduard; 21 June 1818 – 22 August 1893) was the sovereign duke of Saxe-Coburg and Gotha from 29 January 1844 to his death. He was born in Coburg ; his father Ernest III, Duke of Saxe-Coburg-Saalfeld , became Duke Ernest I of Saxe-Coburg and Gotha in 1826 through an exchange of territories.
Ernest I, called "Ernest the Pious" (25 December 1601 – 26 March 1675), was a duke of Saxe-Gotha and Saxe-Altenburg. The duchies were later merged into Saxe-Gotha-Altenburg. He was the ninth but sixth surviving son of Johann II, Duke of Saxe-Weimar, and Dorothea Maria of Anhalt.
Ernst II, Duke of Saxe-Gotha-Altenburg (father of 66) 133. Charlotte of Saxe-Meiningen (mother of 66) 134. Friedrich Franz I, Grand Duke of Mecklenburg-Schwerin (father of 67) 135. Princess Louise of Saxe-Gotha-Altenburg (mother of 67) 136. Frederick, Prince of Wales (father of 68), same person as 88 137.