R. Israel b. Gershon ha-Levi Rosenberg (1875–1956), U.S. Orthodox rabbi. R. Rosenberg, who was born in Lomza, Poland, became known as the Illuy of Lomza and was ordained in 1899 by major European scholars. He went to the U.S. in 1902 and served in the rabbinate of Patterson, Burlinton, and Jersey City. He refused a prestigious position in St. Louis and from 1910 to 1912 was the acting dean of Rabbi Isaac Elchanan Seminary. R. Rosenberg was a founder and director of the Joint Distribution Committee, chaired the Central Relief Commission delegation to Europe (1920), and was a founder of the Ezras Torah Fund which aided European Jews and rabbis after the two world wars. As a leader of Yiddish-speaking Orthodox Jewry, R. Rosenberg was active in the Union of Orthodox Rabbis of the United States and Canada, serving as chairman of its presidium (1926–28, 1940–56), president (1928–30), and honorary president (1930–39). He represented that organization as a member of a five-man commission that met with President Roosevelt in 1942 and received his assurance that Nazis guilty of perpetrating crimes on Jews would be punished.