Sergei Yakovlevich Efron was a Russian poet, White Army officer, and the husband of fellow poet Marina Tsvetaeva. While in exile, he was recruited by the Soviet NKVD. After returning to the USSR from France, he was executed.

Marina Ivanovna Tsvetaeva was a Russian poet. Her work is some of the most well known in twentieth century Russian literature. She lived through and wrote of the Russian Revolution of 1917 and the Moscow famine that followed it.