Frederick William I, Duke of Schleswig-Holstein-Sonderburg-Beck | |
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Born | Haus Beck, near Ulenburg, Westphalia, Brandenburg, Holy Roman Empire | 2 May 1682
Died | 26 June 1719 Battle of Francavilla, Francavilla di Sicilia, Sicily | (aged 37)
Noble family | House of Oldenburg |
Spouse(s) | Maria Antonia called Antoinette Josepha Isnardi di Castello |
Father | August, Duke of Schleswig-Holstein-Sonderburg-Beck |
Mother | Hedwig Louise of Schaumburg-Lippe |
Frederick William I, Duke of Schleswig-Holstein-Sonderburg-Beck (German: Friedrich Wilhelm I. Herzog von Schleswig-Holstein-Sonderburg-Beck; 2 May 1682 – 26 June 1719) was a son of Duke August and his wife, Hedwig Louise of Schaumburg-Lippe. He succeeded his father as Duke of Schleswig-Holstein-Sonderburg-Beck in 1689.
He converted to Roman Catholicism and joined the Army of the Holy Roman Empire. He died of his wounds received six days earlier in the Battle of Francavilla in Francavilla di Sicilia, Sicily, against Spain, in the War of the Quadruple Alliance, on 20 June 1719.
Since he had no surviving male heir, he was succeeded as Duke of Schleswig-Holstein-Sonderburg-Beck by his paternal uncle Frederick Louis.
In Munich, Bavaria, on 8 February 1708, he married Maria Antonia called Antoinette Josefa Isnardi di Castello, 8th Countess of Sanfré (Munich, Bavaria, 15 October 1692 – Vienna, Austria, 17/18 February 1762), sister of Ignazio Giambattista Isnardi di Castello, 6th Marquess of Caraglio and 7th Count of Sanfré, Marquess of Lenoncourt and Marquess of Balinville, and daughter of Francesco Antonio Massimiliano Emmanuele Isnardi di Castello (14 July 1658 – ?), 5th Marquess of Caraglio and 6th Count Consort of Sanfré, Piedmont, Savoy, later Sardinia, and wife Maria Magdalene Grundemann von Falkenberg, heiress of Sanfré and Strevi. They had two surviving daughters:
After his death, his widow inherited Haus Beck, near Ulenburg, then in Minden-Ravensberg, Brandenburg, Brandenburg-Prussia, in 1719, but sold it in 1732 to the actual duke, her late husband's first cousin Frederick William II.[1]