Petr Ankindinovich Venivitinov, a notable representative of a noble family, played an important role in the changes that occurred in the family estates. Under him, the manor house in Novozhivotinnoe was rebuilt and a building was erected in Russkaya Gvozdyevka. It is particularly significant that during his time, the Venivitinovs were included in the sixth part of the Genealogical Book of Russian Nobility. However, biographical information about P.A. Venivitinov remains fragmentary, with the main source of information being the case on the noble dignity of the Venivitinovs, along with minor additions from other sources.

On October 5, 1738, in the village of Voznesenskoe, Bolkhovsky district, the firstborn son Petr was born to Major Ankindin Faddeevich and his wife Anna Lvovna, who was destined to become the heir to the wealth of the Venivitinovs. Soon after his birth, the family moved to the Zivotinskoe estate.

At the age of 16, Petr began his service in the Semenovsky Life Guards Regiment. Ten years later, in 1764, he became an auditor of this regiment, in 1765 he received the rank of ensign, and in 1768 he became a guard ensign. Soon he was retired with the rank of second major due to health reasons. He participated in the Seven Years' War and proved himself to be an honest and brave soldier and a skilled officer.

After retirement, Petr Ankindinovich focused on managing his estates. From 1783 to 1785, he also engaged in public activities as the provincial leader of the nobility.

Petr Venivitinov married Yevdokiya (Avdotya) Alexeyevna Loseva from a Voronezh noble family. They had four sons and two daughters: Alexey (1771), Vasily (1775), Pavel, Vladimir (1777), Maria (1771), and Elizabeth (1770). Vasily, Pavel, and Maria died young. Elizabeth received part of the village of Starozhivotinnoe as her dowry. Alexey and Vladimir were to receive Gvozdyevka and Novozhivotinnoe, but Alexey died young, and the estate of Blagoveshchenskoe passed to Vladimir.

On December 19, 1799, Petr Ankindinovich Venivitinov passed away at the age of 62. He left his only heir, son Vladimir, a model estate, including about 10,000 desyatinas of land and approximately 4,000 male souls, as well as a good name and reputation.