[1] He was a descendant to an old, yet poor noble family, the ancestors of which purportedly originated from the Golden Horde and arrived at Moscow in the middle of the 15th Century.

In early 1805 he retired from the army and became an official in the Ministry of Commerce, but returned on 14 August that year, receiving the position of a staff Rotmister in the Izumsk Hussar Regiment on the 26th.

He was brother to Russian poet Andrey Kaysarov, and later married Varvara Yakovlevna Lanskaya, niece of Alexander Lanskoy.

[3] From 19 June 1812 to 20 August, he was the chief of the Sevastopol Infantry Regiment, and then became adjutant to General Mikhail Kutuzov, at whose side he remained in the Battle of Borodino.

On 5 November 1842, he retired from the armed forces due to poor health, spending the remainder of his days as a member of the Governing Senate of the Russian Empire.