Rabbi Chaim Shmuelevitz

Harav Chaim Leib Shmuelevitz, (1902–1979), was a member of the faculty of the Mirrer Yeshiva for more than 40 years, in Poland, Shanghai and Jerusalem, serving as Rosh yeshiva during its sojourn in Shanghai from 1941 to 1947, and again in the Mirrer Yeshiva in Jerusalem from 1965 to 1979. He taught, guided, and inspired thousands of talmidim throughout his lifetime, by word and deed, with legendary diligence and intensity in Torah study. (Bio adapted from Wikipedia)