<p>Rav Yitzchak Isaac Hager, son of Rav Menachem Mendel of Zavltov, was a scion and descendant of the Kossov-Vizhnitz dynasty. He lived in Berditchev and was renowned as a miracle worker, reciting Tehillim day and night. During the first World War he fled to Vienna. When the Nazis entered Austria in 1938, he fled to Belgium. He passed away on 3 Iyar 5701 (1941) in exile in Zonhoven and was laid to rest in Antwerp. His rebbetzin and sons Moshe and Yisroel all perished in the Holocaust.</p>