Reuben Brainin | |
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| Born | March 16, 1862 Lyady, Belarus |
| Died | November 30, 1939 (aged 77) New York City |
| Genre | Literary criticism, biography |
Reuben ben Mordecai Brainin (Hebrew: ראובן בריינין, romanized: Reuven Brainin; March 16, 1862 – November 30, 1939) was a Russian Jewish publicist, biographer and literary critic.