 With the ascension of the Bolshevists to power, he was sent to internal Russian exile.He was murdered by the Bolsheviks along with several other Romanov relatives and his personal secretary at Alapayevsk on 18 July 1918, one day after the murder of Tsar Nicholas II and his immediate family at Yekaterinburg.Grand Duke Sergei was born on , at Borjomi, his father’s estate from Tiflis.