She was born January 10, 1937 in the village Golubino of Novooskolskiy district of Belgorod region in a peasant family. After the death of his parents, from 1947 to 1954, he was raised in an orphanage №2 in the town of Shusha, Nagorno-Karabakh Autonomous region Azerbaijan SSR. Graduated from the factory school in Baku, and eleven years (since 1954) worked in a textile factory. For many years he led a "nomadic" life, moving from place to place. Kate didn't really painting. She first tried to paint with gouache in 1976, at the age of 39 years, and created my first drawing "the daily Bread". On 10 April of that year opened her first solo exhibition in the Club of trade in Kislovodsk, where it was represented by 37 drawings. Since that time, numerous personal exhibitions in Russia and abroad
Twice the work of Katya Medvedeva was exhibited in nice, the exhibition was organized by the Professor-the Slavist, a famous collector of Russian art, Rene Guerra, and the painting "White nights of Old Ladoga" aroused great interest. This work drew the attention of Marc Chagall, who, at the request of a collector who bought the painting, written on the canvas, under the name of the artist: "Katya Medvedeva is a purely Russian talent. She also loves color as I do"".
Since 1999 K. Medvedev has lived and worked in Ryazan region first in the country Anemnyasevo, and since 2005 in C. First, Kasimov district.