He was present at the battle of Borodino in 1817. Attended Moscow University and was companion to Tsarevich Nicholas Alexandrovich. A member of the Senate in 1837 and promoted Lieutenant General in 1841, and appointed military governor of Moscow in 1850.
For further information on Pietro de Rossi, see T. A. Selinova, Petr Rossi. Russkii miniatiurist, Moscow, 2005.