Wosner was born in Vienna, Austro-Hungary and studied in the Yeshivas Chachmei Lublin of Poland led by Rabbi Meir Shapiro. He was also a student of Rabbi Shimon of Zelicov who was the official supervisor at the Yeshiva. In Vienna, he had known and befriended the Rabbi Chanoch Dov Padwa of Galicia.
Wosner was born in Vienna, Austro-Hungary and studied at the Yeshivas Chachmei Lublin of Poland under Rabbi Meir Shapiro. He also learned from Rabbi Shimon of Zelicov who served as the official supervisor of the Yeshiva. In Vienna, he had known and befriended Rabbi Chanoch Dov Padwa of Galicia.