Prince Igor Constantinovich of Russia (Игорь Константинович; 10 June 1894 – 18 July 1918)[1] was the sixth child of Grand Duke Constantine Constantinovich of Russia by his wife Elisaveta Mavrikievna née Princess Elisabeth of Saxe-Altenburg.

Igor was born on June 10, 1894, and attended the Corps des Pages, an imperial military academy in Saint Petersburg.

During World War I, he was a cornet in the His Majesty's Hussar Guards Regiment.

His health was quite fragile: he had pleurisy and lung complications in 1915, and even if he returned to the trenches, he couldn't walk quickly and often coughed and spat blood.

[3] His body was eventually buried in the Russian Orthodox Church cemetery in Beijing,[4] which was destroyed in 1986 and is now a parking lot.