Naftali Zvi Yehuda Berlin (20 November 1816 in Mir, Russia – 10 August 1893 in Warsaw, Poland), also known as Reb Hirsch Leib Berlin, and commonly known by the acronym Netziv, was an Orthodox rabbi, Rosh yeshiva (dean) of the Volozhin Yeshiva and author of several works of rabbinic literature in Lithuania. Source: Wikipedia (en)