Duke Constantine Frederick Peter of Oldenburg was a Duke of the House of Oldenburg. He was the grandfather of Duke Peter of Oldenburg and Grand Duke Nicholas Nikolaevich, General of the Imperial Russian Army during World War I. His great-great-grandson, Nicholas Romanov, was the President of the Romanov Family Association until his death in 2014.
- Occupation
- composer
- Position held
- member of the State Council of the Russian Empire
- Citizenship
- Grand Duchy of Oldenburg
- Born
- August 26, 1812
- Died
