Abraham Isaac Castello (1726 – August 1, 1789) was a rabbi, preacher, and poet. At the age of thirteen he arrived, poor and destitute, in Livorno, where, although he had previously intended to become a mechanic, his agreeable voice induced him to prepare himself to become a cantor. After the death of Adam Bondi, cantor of the Jewish congregation in Livorno, whose daughter he had married, he became his successor. He then, with indefatigable diligence, devoted himself to the study of the Hebrew and Spanish languages, and to rabbinical science. He was soon advanced to the position of rabbi and preacher, in which capacity he so greatly distinguished himself that even Christian scholars delighted to discuss with him religious and philosophical topics. Castello is probably the Jewish scholar wit