Kalonymus Haberkasten was a rabbi and Talmudist in sixteenth century Poland.
Haberkasten was rosh yeshiva in Lviv, and was later the first rabbi of the city of Ostroh, Volhynia.
Haberkasten was also a Kabbalist and was known to have made the acquaintance of the great Kabbalists in the Holy Land, including Rabbi Chaim Vital.
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