Chaim Dov Keller

Chaim Dov Keller (1930August 17, 2020) was an American Haredi rabbi,
Talmudic scholar, and journalist. He was the co-founder and co-rosh yeshiva ("dean") of the Telshe Yeshiva in Chicago. He wrote in Haredi newspapers such as the "Yated Ne'eman" in the United States. He was born in New York City.
Keller was diagnosed with COVID-19 in March 2020. He died on August 17, 2020 in Chicago, aged 90.