The relative of Prince Georgy Konstantinovich of Russia was the grandson of Emperor Nicholas 1 who was the father of Princh John Konstantinovich of Russia.
Prince Ioann Konstantinovich of Russia (Russian:   ) (5 July 1886  18 July 1918), sometimes also known as Prince John, Prince Ivan or Prince Johan, was the eldest son of Grand Duke Konstantin Konstantinovich of Russia by his wife Yelizaveta Mavrikievna, ne Princess Elisabeth of Saxe-Altenburg. 
Grand Duke Konstantin Konstantinovich of Russia (Russian:   ; ] ; 22 August 1858 in Strelna  15 June 1915 in Pavlovsk) was a grandson of Emperor Nicholas I of Russia, and a poet and playwright of some renown. 
Prince Georgy Konstantinovich of Russia (6 May 1903  7 November 1938), was the youngest son of Grand Duke Konstantin Konstantinovich of Russia and his wife Grand Duchess Yelizaveta Mavrikiyevna. 
