Павлов И.П., отец Петр Дмитриевич,мать Варвара, бр.Сергей, Дмитрий, Петр. 1870-егг(pavlovs museum), Ivan Pavlov, 1875

Pavlov ivan petrovich, his father peter dmitrievich, mother varvara ivanovna, brothers sergei, dmitry, peter, sister. Photo from the 1870s. Date: 1875.