Frederick Louis, Duke of Schleswig-Holstein-Sonderburg-Beck
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Frederick Louis of Holstein-Sonderburg-Beck (German: Friedrich Ludwig von Holstein-Sonderburg-Beck), Duke of Schleswig-Holstein-Sonderburg-Beck, was born on April 6, 1653 in Beck. He was the son of August Philipp, Duke of Schleswig-Holstein-Beck and Countess Marie Sibylle of Nassau-Saarbrücken. Friedrich died on March 7, 1728 in Königsberg.
He was only the titular duke, because he did not inherit the domain of Beck. It had been inherited by the son of his elder brother, Duke August, in 1689.[1] August's son, Duke Frederick William I, was killed in the Battle of Francavilla in Sicily in 1719, leaving a widow, née doña Maria Antonia Isnardi di Castello, Contessa di Sanfré (1692-1762), and two minor daughters.[1] Maria Antonia shared administration of Beck with her mother-in-law, Duchess Hedwig Luisa of Schleswig-Holstein-Beck (née Countess zu Lippe-Buckeburg-Schaumburg).[1]
On 1 January 1685 in Augustenburg, Frederick Louis married Luise Charlotte of Schleswig-Holstein-Sonderburg-Augustenburg, daughter of Ernest Gunther, Duke of Augustenborg and Augusta of Glucksburg.
Frederick Louis was succeeded as duke by his eldest son, Frederick William II (1687-1749) (whose only son, Duke Frederick William III, died in battle at Prague in 1757), and eventually by his younger sons, Carl Louis (1690-1774), and Peter August, Duke of Schleswig-Holstein-Sonderburg-Beck (1697-1775).[1]
In 1732, Beck would be bought by Frederick William II from Maria Antonia, re-uniting the ducal title and ducal lands. But the latter only remained in the family until sold in 1745.[1]
