Ḥayyim Moshe Fresco (1780–1850) was the chief rabbi (hahambaşı) of Istanbul from 1839 to 1841, succeeding Samuel Ḥayyim in that office. On November 3, 1839, as representative of all the Jews in the Ottoman Empire, Fresco attended the official ceremony proclaiming the Hatt-i Sherif (Hatt-ı Şerif)of Gülhane (Imperial Rescript of Gülhane), which ushered in the Tanzimat reform period. In 1840, at the urging of Sir Moses Montefiore, Fresco published a proclamation in Hebrew and Judeo-Spanish (complete bilingual text in Allgemeine Zeitung des Judenthums, vol. 5, 1841, pp. 16–17) ca…