Osip Mandelstam
Mandelstam's poetry, acutely populist in spirit after the first Russian revolution, became closely associated with symbolist imagery, and in 1911 he and several other young Russian poets formed the "Poets' Guild" (Russian: Цех Поэтов, Tsekh Poetov), under the formal leadership of Nikolai Gumilyov and Sergei Gorodetsky.