Wikipedian hubErnest Günther I of Schleswig-Holstein-Sonderburg-Augustenburg (14 October 1609 – 18 January 1689) was a Duke of Schleswig-Holstein of its Sonderburg line.[1] He was the first to have his ducal seat in Augustenborg Palace, which he built and named in honor of his wife.[2] He ruled from 1647 until his death in 1689.[3]
Ernest Günther was born on 14 October 1609 at Haus Beck near Minden in Westphalia as the third son of Alexander, Duke of Schleswig-Holstein-Sonderburg and his wife, Countess Dorothea of Schwarzburg-Sondershausen (1579-1639).[4] His father was the eldest son of John the Younger of Schleswig-Holstein-Sonderburg, who himself was a younger son of King Christian III of Denmark-Norway. Ernest Günther thus belonged to a junior branch of the House of Oldenburg which had ruled Denmark since 1448.
On 15 June 1651 he married Princess Auguste of Schleswig-Holstein-Sonderburg-Glücksburg (27 June 1633 – 26 May 1701), daughter of Duke Philipp of Schleswig-Holstein-Sonderburg-Glücksburg and his wife, Princess Sophie Hedwig of Saxe-Lauenburg (1601-1660).[5] They had ten children:
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