Ivan Bubnov 1872–1919 Source: Wikimedia Commons About Ivan Bubnov Russian mathematician (1872–1919) People from the Same Era Charlotte Olivier 1864–1945 physician Saint Petersburg Sarah Knight b. 1862 artist Otto Münther 1864–1929 journalist, literary critic, politician, writer Kuksema Rural Municipality Rikard Katalinić Jeretov 1869–1954 poet, writer Volosko Theodore Hetzler 1875–1945 banker Clémentine de Vère 1864–1954 opera singer Paris