Born and raised in Imperial Russia during the reign of his uncle Nicholas II, he followed a military career and entered the Corps of Pages during World War I.

Affected by tuberculosis, Prince Feodor moved to England with his mother spending the years of World War II there.

This fifteen-year-old boy was tall for his age; his wild and curly chestnut hair framed a handsome, typically nordic face with very mobile features.

For some time, Prince Feodor was under house arrest in Ai-Todor and later at Dulber imprisoned with his parents, siblings, grandmother the Dowager Empress and many more Romanov relatives.

Prince Feodor, and his relatives in the Crimea, escaped the fate of a number of his Romanov cousins who were murdered by the Bolsheviks when they were freed by German troops in 1918.

He left Russia on 11 April 1919 abroad the Royal Navy ship HMS Marlborough and moved to England and later to France.

Prince Feodor married on 3 June 1923 in St. Alexander Nevsky Cathedral in Paris,[3] Princess Irina Paley (1903–1990), his first cousin once removed.

Princess Irina began a relationship with Count Hubert de Monbrison (15 August 1892 – 14 April 1981) and had a daughter with him while still married to Prince Feodor, who recognized the child as his.

After the war ended, to improve his health and to stay closer to his son, Prince Feodor settled in the south of France at the villa of his sister Princess Irina Alexandrovna.