Yes! Samuel Mohilever (Russia) was a Talmudic scholar and one of the leading Orthodox Rabbis of Eastern Europe. A graduate from the famous Voloshin Yeshiva, he was conversant in math, engineering, and a number of languages. Mohilever encouraged Baron Edmond de Rothschild to support the resettling of Russian families in Eretz-Israel and was a mediator between the settlers and Rothschild in various disagreements which arose. He was the founder of Mizrachi, a religious Zionist organization, and one of the founders of the Hovevei Zion, Lovers of Zion (1881). After Leo Pinsker died, the movement was going through a deep crisis. Mohilever coined the phrase: the Mercaz Ruchani (religious source or center) or in short Mizrachi in an effort to rejuvenate the movement. Ten years later, when Rabbi Reines was looking for a good name for a religious Zionist movement, he adopted the name.