sentences:  He had married once, to one Aleksandra Grigorievna Markelova (1832–1916), fathering by her two sons, Dmitry and Valery, whilst adopting her son Grigory from an earlier marriage.He trained Grigory as a photographer, while Valery went on to become a famous caricaturist.His wife Aleksandra, nicknamed Sashura, was a liberal and a nihilist, and for a time the only female journalist at the "Peterburskie Vedomosti" ("Saint Petersburg Times").