Grand Duke Boris Vladimirovich of Russia (24 November 1877 – 9 November 1943) was a son of Grand Duke Vladimir Alexandrovich of Russia, a grandson of Tsar Alexander II of Russia and a first cousin of Tsar Nicholas II. He followed a military career. After graduating from the Nicholas Cavalry College in 1896, he served as cornet in the Life Guards Hussar regiment. He took part in... Wikipedia