Mikhail Vasilyevich Butashevich-Petrashevsky (Russian: Михаил Васильевич Буташевич-Петрашевский; 13 November [O.S. 1 November] 1821 – 19 December [O.S. 7 December] 1866), commonly known as Mikhail Petrashevsky, was a Russian Utopian theorist, best known for his central role in the activities of the Petrashevsky Circle, a literary discussion group in Saint Petersburg in the 1840s. Source: Wikipedia (en)