V. I. Lenin, N. K. Krupskaya, A. I. Elizarova, M. I. Ulyanova, D. I. Ulyanov and G. Loegachev in the Kremlin apartment of V. I. Lenin. Moscow, autumn 1920. Photo by D. Leshchenko -- Daily LIFT #362
M. I. Ulyanova was Lenin's sister and a prominent Soviet politician until her death in 1937. D. I. Ulyanov (holding the cat) was Lenin's brother and active in the CPSU as well until his death in 1943.
This historic photo is available as a poster (five sizes) on our Etsy store: https://daughtersoftheempire.etsy.com/listing/1651493603