 Complete the following phrase:  From a noble family in Ryazan province, he was the son of Brigadier Ivan Ivanovich Demidov. As was the custom of the time his birth was recorded with the Preobrazhensky Lifeguard regiment and three years later promoted to Sergeant. He entered active service on 1 January 1790, rising to captain in 1798 and colonel in 1799. In 1803 he was made a major general and placed in the Izmaylovsky Regiment before being made head of the Petrovsky Infantry Regiment on May 16, with which he marched into Prussia during the 