Alexei Nikolaevich, Tsarevich of Russia

Alexei Nikolaevich, Tsarevich of Russia (Цесаревич Алексей Николаевич Poмaнoв Cesarevič Aleksej Nikolaevič Romanov), full title: Heir, Tsesarevich and Grand Duke (Наследник-Цесаревич и Великий Князь, Naslednik-Cesarevich i Velikiy Knyaz) ( – 17 July 1918), of the House of Romanov, was Tsesarevich (the heir apparent, sometimes mistaken as Tsarevich) of Russia, being the youngest child and the only son of Emperor Nicholas II of Russia and Alexandra Feodorovna. His mother's reliance on the starets Grigori Rasputin to treat Alexei's haemophilia helped bring about the end of Imperial Russia. His murder on 17 July 1918, following the Russian Revolution of 1917, resulted in his canonization many decades later as a passion bearer of the Russian Orthodox Church.