Prince Frederick William of Schleswig-Holstein-Sonderburg-Augustenburg

Who is Prince Frederick William of Schleswig-Holstein-Sonderburg-Augustenburg?

Prince Frederick William of Schleswig-Holstein-Sonderburg-Augustenborg was a member of the House of Oldenburg and a Prince of Schleswig-Holstein-Sonderburg-Augustenburg.

He was the youngest son of Duke Ernest Günther, Duke of Schleswig-Holstein-Sonderburg-Augustenburg and his wife, Auguste of Schleswig-Holstein-Sonderburg-Glücksburg. In 1675, when is father negotiated with Count Peder Griffenfeld about a marriage with Frederick William's sister, he was promised a profitable post as provost of the Cathedral in Hamburg and governor of Als. He was appointed as provost in Hamburg in 1676, after chairman Kielmansegge died. When his father died in 1689, the will stated that his possessions would go to his widow, who would have the right to settle the succession. She made a decision, which was upheld by the King in 1692. Her eldest living son, Ernest Augustus, was excluded from the inheritance, because he had converted to Catholicism, leaving the Duchy to Frederick William, who was by then the only other surviving son. Almost simultaneously, Frederick William was also appointed governor of Sønderborg.