His students – found in Israel, South America, post-World War II Europe, and elsewhere – included Emmanuel Levinas and Elie Wiesel.
His origins are completely unknown, and his gravestone (located in La Paz, Canelones, Uruguay, where he died in January 1968) reads, "The wise Rabbi Chouchani of blessed memory.
[1] An article published by Yael Levine in 2015, based on genealogical research, brought documentation supporting the view that Chouchani was none other than Perlman, a native of Brest-Litovsk (Brisk).
[2] By all accounts, Chouchani had the appearance of a vagabond and yet was reputed to be a master of vast areas of human knowledge, including science, mathematics, philosophy, and especially the Talmud.
He disappeared for a while after that, evidently spent some time in the newly formed state of Israel, returned to Paris briefly, and then left for South America where he lived until his death.
[5] A French journalist named Salomon Malka wrote a 1994 book about him, entitled Monsieur Chouchani: L'énigme d'un maître du XXe siècle (Mister Shushani: The enigma of a 20th century master).