Konstantin
Nikolayevich Cardo-Sysoev

(St. Petersburg), doctor of medical Sciences (1907), surgeon - ophthalmologist, author of 18 scientific works. Born in Tver province, graduated from the Novgorod school and the Military medical Academy. Member of the Geographical society.

In the 1930s summer spent in D. Nozhkino the former. Borovichi County (now Hvoyninsky district). Performed a large collection of excellent pastels (36) with the types of the Borovichi region, sent his daughter – Elena Konstantinovna – in the late 1940s in Borovichi Museum of local lore. Died Konstantin Nikolaevich in the besieged Leningrad.