Avraham Yitchak Bloch was born in 1891 into a Jewish family and was the second son of Rabbi Yosef Leib Bloch, the Rosh yeshiva of Telz.
Avraham Yitchak Bloch, born in 1891 to a Jewish family, was the second son of Rabbi Yosef Leib Bloch, the leader of the yeshiva in Telz.