The Prokhorovs were prominent entrepreneurs, public figures, and philanthropists of peasant origin. They founded the Trekhgornaya Manufactory in Moscow in 1799, which they owned for the next 120 years, transforming it from a small factory into a major enterprise.
Initially, their family cemetery was located at the Dorogomilovo Cemetery, where 11 members of three generations of the family were buried. This included Ivan Prokhorovich, the dynasty’s founder, and Vasily Ivanovich, the founder of the manufactory.
The decision to establish a family burial site at Novodevichy Convent was made by Ivan Yakovlevich Prokhorov, who reorganized the family business in 1874. Together with his wife and brother Alexei, he established the Prokhorov Manufactory as a shareholder company.
At Novodevichy Convent, a family crypt of 40 square meters was built, divided into two chambers: the southern chamber under the chapel and the northern chamber under the courtyard. Buried there are Ivan Yakovlevich (1836–1881), his wife Anna Alexandrovna (1840–1909), his brother Alexei Yakovlevich (1847–1888), their daughters Lyubov Ivanovna and Ekaterina Ivanovna, their son-in-law Alexander Ivanovich Alekhin, and two grandchildren. Ivan Yakovlevich Prokhorov had two sons and four daughters. The sons purchased family plots at Vagankovo Cemetery.