During the Russian Revolution Prince Rostislav was imprisoned along with his parents and grandmother the Dowager Empress at Dulber, in the Crimea.

He left Russia in 1919 aboard the Royal Navy ship HMS Marlborough for Malta, where they spent nine months before moving to England and later settling in Cannes, France.

Rostislav married Hedwig Maria Gertrud Eva von Chappuis (6 December 1905 – 9 January 1997) on 19 November 1954.

However, Pieter Broek at the Wayback Machine (archived February 12, 2002) holds that it was as acceptable dynastically as the Bagrationi marriage of Vasili's cousin, Vladimir Kirillovich.

Since the extinction of the Korecki family in the 17th century, the Golitsyns [Galitzin] have claimed dynastic seniority in the House of Gediminas.