Ernest August, Duke of Schleswig-Holstein-Sonderburg-Augustenburg
Ernest August, Duke of Schleswig-Holstein-Sonderburg-Augustenburg was the second son of Duke Ernest Günther and his wife Auguste.
Ernest August converted to Catholicism and became a canon in Strasbourg. However, he later reverted to Lutheranism. Wikipedia
Born: October 30, 1660
Died: March 12, 1731 (age 70 years)
Great-grandparents: John II, Duke of Schleswig-Holstein-Sonderburg, Elisabeth of Brunswick-Grubenhagen, Anne von Oldenburg, and more
Partner: Marie Therese von Velbruck (1695–)