Rebbe Chanoch Henach Dov Mayer, first Alesker Rebbe known as the Lev Sameach (lit. "happy heart"), son-in-law of Grand Rabbi Sholom Rokeach of Belz. His works include Lev Sameach on the Torah, Siddur Lev Sameach, and Hagaddah Lev Sameach. He also codified the Torah writings of his father-in-law.
The current rabbi of Alesk, Rabbi Yitzchok Ashkenazi resides in Brooklyn, NY.