Rabbi, preacher, and poet; born at Ancona 1726; died at Leghorn Aug. 1, 1789. At the age of thirteen he arrived, poor and destitute, in Leghorn, 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 Leghorn, 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, and 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 with whom Lessing conversed during his scientific tour in the company of Duke Leopold of Brunswick, and, on hearing whom, the duke is said to have exclaimed in astonishment, "Here we have one even greater than Mendelssohn—of far purer metaphysics."

Castello was the author of the following writings, all published at Leghorn: "Ḳol Millin," an allegorical drama in celebration of the wedding of Aaron Ergas and Deborah da Costa (1765); "Oracion Doctrinal" (1753); "A Memorial Sermon on the Death of Francis I. of Germany" (1765), written in Spanish, and translated by Castello's son Joseph into Italian. Besides these there were several occasional poems in Hebrew published by Sal. Michell in "Composizioni Poetichi" (1788), and by A. B. Piperno in the collection "Ḳol 'Ugab" (1846).

  • Berliner, in Israelitische Monatsschrift, Beilage zur Jüdischen Presse, 1898, pp. 21, 22;
  • Piperno, Ḳol;
  • 'Ugab, at end;
  • Nepi-Ghirondi, Toledot Gedole Yisrael, No. 51;
  • S. D. Luzzatto, Epistolario Italiano-Francese, 1890, p. 734;
  • Roest, Cat. Rosenthal. Bibl. p. 256.
L. G. M. K.
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