R. Aaron Judah b. Samuel Arak (b. 1895), Galician scholar, was ordained by his uncle R. Meir Arak (1855-1925) the noted Galician rabbinical authority and author of many important works. R. Aaron Judah was the rabbi of Cong. Achvah Vereiut in Vienna from 1920-1939. In 1941, he emigrated to the United States and served in Cong. Bet Shalom of the Bronx for many years. He was the son in law of the Skoler Rebbe, wrote several works which apparently still remain in manuscript.