Wilhelm Friedrich, Duke of Schleswig-Holstein
Wilhelm Friedrich, Duke of Schleswig-Holstein-Sonderburg-Glücksburg, from 1934 Duke of Schleswig-Holstein (in German: Wilhelm Friedrich Christian Günther Albert Adolf Georg Prinz zu Schleswig-Holstein-Sonderburg-Glücksburg then Prinz zu Schleswig-Holstein; 23 August 1891 – 10 February 1965), was the sixth Duke of Schleswig-Holstein and Head of the House of Oldenburg from 21 January 1934 until his death on 10 February 1965.
| Friedrich | |||||
|---|---|---|---|---|---|
| Duke of Schleswig-Holstein | |||||
![]() | |||||
| Head of the House of Schleswig-Holstein | |||||
| Tenure | 21 January 1934 – 10 February 1965 | ||||
| Predecessor | Friedrich Ferdinand | ||||
| Successor | Peter | ||||
| Born | 23 August 1891 Schleswig-Holstein, Prussia, German Empire | ||||
| Died | 10 February 1965 (aged 73) Coburg, Bavaria, West Germany | ||||
| Spouse | |||||
| Issue | Hans Albrecht, Hereditary Prince of Schleswig-Holstein Prince Wilhelm Alfred Peter, Duke of Schleswig-Holstein Princess Marie Alexandra | ||||
| |||||
| House | Glücksburg | ||||
| Father | Friedrich Ferdinand, Duke of Schleswig-Holstein | ||||
| Mother | Princess Karoline Mathilde of Schleswig-Holstein-Sonderburg-Augustenburg | ||||
Early life

Prince Friedrich was born on 23 August 1891 at Grünholz Castle in Schleswig-Holstein, Prussia. He was the fifth child and only son of Frederick Ferdinand, Duke of Schleswig-Holstein-Sonderbug-Glücksburg and his wife, Princess Karoline Mathilde of Schleswig-Holstein-Sonderburg-Augustenburg.
Prince Friedrich's father was the eldest son of Friedrich, Duke of Schleswig-Holstein-Sonderburg-Glücksburg and a nephew of Christian IX of Denmark. Upon the death of his father in 1885, he had succeeded to the headship of the House of Schleswig-Holstein-Sonderburg-Glücksburg and the title of duke.
Marriage
Friedrich married his second cousin, Princess Marie Melita of Hohenlohe-Langenburg, daughter of Ernst II, Prince of Hohenlohe-Langenburg and his wife Princess Alexandra of Saxe-Coburg and Gotha, on 5 February 1916 at Coburg. Friedrich and Marie Melita had four children.
Later life
When the Head of the House of Schleswig-Holstein-Sonderburg-Augustenburg, Albert, Duke of Schleswig-Holstein, died on 27 April 1931, Friedrich's father Friedrich Ferdinand became the Head of the House of Oldenburg and inherited the title of Duke of Schleswig-Holstein.
On 21 January 1934, Duke Friedrich Ferdinand died, and Friedrich became head of the House of Schleswig-Holstein-Sonderburg-Glücksburg.
Duke Friedrich died on 10 February 1965 in Coburg, Bavaria, West Germany.
Issue
- Hans Albrecht, Hereditary Prince of Schleswig-Holstein (12 May 1917 – 10 August 1944)
- Prince Wilhelm Alfred Ferdinand of Schleswig-Holstein-Sonderburg-Glücksburg (24 September 1919 – 17 June 1926)
- Friedrich Ernst Peter, seventh Duke of Schleswig-Holstein (30 April 1922 – 30 September 1980), married with Princess Marie Alix of Schaumburg-Lippe, and father of the current head of the House of Schleswig-Holstein, Christoph, Prince of Schleswig-Holstein
- Princess Marie Alexandra of Schleswig-Holstein-Sonderburg-Glücksburg (9 July 1927 – 14 December 2000)

Ancestry
| Ancestors of Wilhelm Friedrich, Duke of Schleswig-Holstein |
|---|
