Grand Duke Alexei Alexandrovich of Russia (Russian: Алексе́й Алекса́ндрович; 14 January [O.S. 2 January] 1850 in St. Petersburg – 14 November 1908 in Paris) was the fifth child and the fourth son of Alexander II of Russia and his first wife Maria Alexandrovna (Marie of Hesse).
Alexei Nikolaevich (Russian: Алексе́й Никола́евич) (12 August [O.S. 30 July] 1904 – 17 July 1918) was the last Tsesarevich (heir apparent to the throne of the Russian Empire). He was the youngest child and only son of Emperor Nicholas II and Empress Alexandra Feodorovna.
Grand Duke Alexei Petrovich of Russia (28 February 1690 – 26 June 1718) was a Russian Tsarevich. He was born in Moscow, the son of Tsar Peter I and his first wife, Eudoxia Lopukhina . Alexei despised his father and repeatedly thwarted Peter's plans to raise him as successor to the throne.
Grand Duke Vladimir Alexandrovich of Russia (Russian: Влади́мир Александрович; 22 April 1847 – 17 February 1909) was a son of Emperor Alexander II of Russia, a brother of Emperor Alexander III of Russia and the senior Grand Duke of the House of Romanov during the reign of his nephew, Emperor Nicholas II.
In March 2009, results of the DNA testing were published, confirming that the two bodies discovered in 2007 were those of Alexei and one of his sisters.  In late 2015, at the insistence of the Russian Orthodox Church,  Russian investigators exhumed the bodies of Nicholas II and his wife, Alexandra, for additional DNA testing,  which confirmed that the bones were of the couple.
Antecedentes. El 1 de diciembre de 1940, en una sesión informativa celebrada en el OKH (Estado Mayor General del Ejército), el Generaloberst Franz Halder presentó sus planes para la operación Barbarroja; en dicha reunión, Halder intentó convencer a Hitler de que el objetivo de la campaña debía ser Moscú, centro político de la Unión Soviética, y de que el objetivo final consistiría ...
Grand Duke Sergei Alexandrovich was born on 11 May [O.S. 29 April] 1857 in the Zubov wing of the Catherine Palace at Tsarskoye Selo.He was the seventh child and fifth son among the eight children of Alexander II of Russia and his first wife Maria Alexandrovna, née Duchess Maximilienne Wilhelmine of Hesse and by Rhine.