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Pyotr Chaadayev died in 1856.
Pyotr Chaadayev was born in 1794.
Pyotr's friend ask for a stag party because Pyotr friend had come to know that Pyotr was getting married.
Pyotr Pakhtusov was born in 1800.
Pyotr Fomenko's birth name is Fomenko, Pyotr Naumovich.