Ivan Nikolayevich Kramskoi[a] (Russian: Иван Николаевич Крамской; 8 June [O.S. 27 May] 1837 – 5 April [O.S. 24 March] 1887) was a Russian Realist painter and art critic. He was an intellectual leader of the art movement known as the Wanderers between 1860 and 1880.
https://en.wikipedia.org/wiki/Ivan_Kramskoi
Ivan Ivanovich Shishkin was a Russian landscape painter closely associated with the Peredvizhniki movement.
