Duke Schleswig-Holstein-Sonderburg-Beck is in German Duke.
On 12th April 1651 August Philipp Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck (age 38) and Marie Sibylle Nassau Saarbrücken Duchess Schleswig-Holstein-Sonderburg-Beck were married at Beck. She by marriage Duchess Schleswig-Holstein-Sonderburg-Beck. He the son of Alexander Oldenburg I Duke Schleswig Holstein Sonderburg and Dorothea Schwarzburg Duchess Schleswig Holstein Sonderburg.
On 6th May 1675 August Philipp Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck (age 62) died at Beck. His son Frederick (age 22) succeeded Louis I Duke Schleswig-Holstein-Sonderburg-Beck.
On 1st January 1685 Frederick Louis Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck (age 31) and Louise Charlotte Oldenburg Duchess Schleswig-Holstein-Sonderburg-Beck (age 26) were married. She by marriage Duchess Schleswig-Holstein-Sonderburg-Beck. She the daughter of Ernest Günther Oldenburg I Duke Schleswig Holstein Sonderburg Augustenburg (age 75) and Auguste Oldenburg Duchess Schleswig Holstein Sonderburg Augustenburg (age 51). He the son of August Philipp Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck and Marie Sibylle Nassau Saarbrücken Duchess Schleswig-Holstein-Sonderburg-Beck. They were first cousins.
On 5th September 1723 Peter August Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck (age 25) and Sophie of Hesse-Philippsthal Duchess Schleswig-Holstein-Sonderburg-Beck (age 28) were married. She by marriage Duchess Schleswig-Holstein-Sonderburg-Beck. She the daughter of Philip Landgrave of Hesse-Philippsthal. He the son of Frederick Louis Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck (age 70) and Louise Charlotte Oldenburg Duchess Schleswig-Holstein-Sonderburg-Beck (age 65).
On 7th March 1728 Frederick Louis Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck (age 74) died. His son Frederick (age 40) succeeded William II Duke Schleswig-Holstein-Sonderburg-Beck.
On 15th March 1742 Peter August Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck (age 44) and Natália Nikolaievna Golovine Duchess Schleswig-Holstein-Sonderburg-Beck were married. She by marriage Duchess Schleswig-Holstein-Sonderburg-Beck. He the son of Frederick Louis Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck and Louise Charlotte Oldenburg Duchess Schleswig-Holstein-Sonderburg-Beck.
On 11th November 1749 Frederick William Oldenburg II Duke Schleswig-Holstein-Sonderburg-Beck (age 62) died. His brother Peter (age 51) succeeded Aug I Duke Schleswig-Holstein-Sonderburg-Beck.
On 30th May 1754 Karl Anton Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck and Frederica Charlotte Dohna Schlodien Duchess Schleswig-Holstein-Sonderburg-Beck were married at Königsberg. She by marriage Duchess Schleswig-Holstein-Sonderburg-Beck. He the son of Peter August Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck (age 56) and Sophie of Hesse-Philippsthal Duchess Schleswig-Holstein-Sonderburg-Beck.
On 12th September 1759 Karl Anton Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck died at Szczecin. His son Friedrich (age 2) succeeded Karl I Duke Schleswig-Holstein-Sonderburg-Beck.
On 9th March 1780 Friedrich Karl Ludwig Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck (age 22) and Friederike Schlieben Duchess Schleswig-Holstein-Sonderburg-Beck were married. She by marriage Duchess Schleswig-Holstein-Sonderburg-Beck. He the son of Karl Anton Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck and Frederica Charlotte Dohna Schlodien Duchess Schleswig-Holstein-Sonderburg-Beck.
Karl Anton Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck succeeded Anton I Duke Schleswig-Holstein-Sonderburg-Beck.
August Philipp Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck succeeded Philip I Duke Schleswig-Holstein-Sonderburg-Beck.