Pëtr Grigor'evič Zaičnevskij
1842–1896 (age 54)
Biography
Pyotr Grigoryievich Zaichnevsky (Russian: Пётр Григорьевич Заичневский; 30 September 1842 – 31 March 1896) was a Russian revolutionary known as one of the main ideologues of Russian Jacobinism.