| Nikolaus | |||||
|---|---|---|---|---|---|
| Hereditary Grand Duke of Oldenburg | |||||
 | |||||
| Born | 10 August 1897 Oldenburg, Grand Duchy of Oldenburg | ||||
| Died | 3 April 1970 (aged 72) Rastede, West Germany | ||||
| Spouse | Princess Helena of Waldeck and Pyrmont Anne-Marie von Schutzbar gennant Milchling | ||||
| Issue | Anton-Günther, Duke of Oldenburg Duchess Rixa Duke Peter Eilika, Princess of Leiningen Duke Eigilmar Duke Friedrich August Altburg, Baroness Rüdiger von Erffa Duke Huno Duke Johann | ||||
| |||||
| House | Holstein-Gottorp | ||||
| Father | Frederick Augustus II, Grand Duke of Oldenburg | ||||
| Mother | Duchess Elisabeth Alexandrine of Mecklenburg-Schwerin | ||||
| Religion | Lutheranism | ||||
Nikolaus, Hereditary Grand Duke of Oldenburg (German: Nikolaus Friedrich Wilhelm von Holstein-Gottorp, Erbgroßherzog von Oldenburg; 10 August 1897 – 3 April 1970) was the eldest son of Frederick Augustus II, Grand Duke of Oldenburg, who was the last ruling Grand Duke of Oldenburg.
In 1931, Nikolaus succeeded to his father's titles and assumed the role of pretender to the Grand Duchy, until his death in 1970.[citation needed]