Ernest G%C3%BCnther, Duke of Schleswig Holstein Sonderburg Augustenburg

Ernest Gnther of SchleswigHolsteinSonderburgAugustenburg was a Duke of SchleswigHolstein of its Sonderborg line. He was the first who had his ducal seat in the new palace of Augustenborg, and he ruled from 1647 until his death in 1689.

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Source: Wikipedia