Meir Simcha of Dvinsk branches were established in Toronto and Montreal in Canada, and in Detroit, Los Angeles, and Philadelphia. Worldwide, branches, all bearing the name "Ohr Somayach", are Ohr Somayach, South Africa, London in the United Kingdom, Kiev in the Ukraine, and Sydney in Australia. Meir Simcha of Dvinsk Meir Simcha of Dvinsk (1843–1926) was a rabbi and prominent leader of Orthodox Judaism in Eastern Europe in the early 20th century. He was a kohen, and is therefore often referred to as "Meir Simcha ha-Kohen" ("Meir Simcha the Kohen"). He is known for his writings on Maimonides' Mishneh Torah, which he titled "Ohr
Simcha Rotem Simcha Rotem Simcha Rotem (born 1924 Simcha (Szymon) Rathajzer , also known as Kazik his nom de guerre) is an Israeli veteran, who was a member of the Jewish underground in Warsaw, and served as the head courier of the Jewish Fighting Organization (ZOB), which planned and executed the Warsaw ghetto uprising against the Nazis. He was a member of the "Akiva" youth movement. In 1942 he joined the ZOB. Rotem became particularly useful as a courier for the Warsaw Ghetto fighters. The nickname "Kazik"—an abbreviation of a Polish name "Kazimierz" (Casimir), which means in Polish "someone who destroys opponent's