 Following the abdication of Emperor Nicholas II, Prince Roman resided at his father's Dulber estate in the Crimea and in April 1919 he left Russia on the British battleship HMS Marlborough.In 1941 he was offered and refused the Crown of the newly established Italian puppet state, the Kingdom of Montenegro.Prince Roman was married on 16 November 1921 at Cap d'Antibes, France to Countess Praskovia Sheremeteva (18 October 1901–
21 December 1980) and they had two sons.