John Ernest II

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Johann Ernst II
Duke of Saxe-Weimar
Reign	1662–1683
Predecessor	William
Successor	William Ernest
Born	(1627-09-11)11 September 1627 Weimar
Died	15 May 1683(1683-05-15) (aged 55) Weimar
Spouse	Christine Elisabeth of Holstein-Sonderburg
Issue	Anna Dorothea, Abbess of Quedlinburg Wilhelmine Christine, Countess of Schwarzburg-Sondershausen Eleonore Sophie, Duchess of Saxe-Merseburg-Lauchstädt William Ernest, Duke of Saxe-Weimar John Ernest III, Duke of Saxe-Weimar
House	Wettin
Father	William, Duke of Saxe-Weimar
Mother	Eleonore Dorothea of Anhalt-Dessau
Religion	Lutheran

John Ernest II (11 September 1627, in Weimar – 15 May 1683, in Weimar), was a duke of Saxe-Weimar. He was the second but eldest surviving son of William, Duke of Saxe-Weimar, and Eleonore Dorothea of Anhalt-Dessau.