Alexei Nikolaevich (1904–1918) was the final tsarevich and heir apparent to the Russian throne. As the only son of Tsar Nicholas II and Empress Alexandra Feodorovna, his birth was a moment of great joy for the imperial family. Throughout his childhood, he struggled with severe hemophilia, a condition inherited from his mother's lineage that made minor injuries life-threatening. Following the Russian Revolution, the imperial family was held in exile before being executed by the Ural Regional Soviet in July 1918.