Giovanni ( fl. 1482–1503) [1] and Gregorio ( fl. 1496–1527) [1] De Gregori ( Latin: Johannes & Gregorius de Gregoriis) were two Italian brothers from Forlì who worked as printers in Renaissance Venice. They are generally credited with the first attractive type in nonpareil size for a 1498 [2] or 1501 [3] edition of the divine offices.
Gregorio de Gregori is considered to have published the first book printed in Arabic, Kitab salat al-sawai—a book of hours—in 1514. [4]