Ivan Kalyayev

Ivan Kalyayev (Russian: Иван Платонович Каляев; 6 July 1877 – 23 May 1905) was a Russian poet, a member of the Socialist-Revolutionary Party. He is best known for his role in the assassination of Grand Duke Sergei Alexandrovich, which was an operation of the SR Combat Organization. Arrested at the scene, Kalyayev was convicted of murder and hanged.