Casaglia, Gherardo (2005). "Manuel García". L'Almanacco di Gherardo Casaglia (in Italian). To be more precise, there had been previous performances of both Don Giovanni and Le nozze di Figaro, "but in much shortened versions and in wretched English translations by Henry Rowley Bishop". Since the García company lacked a suitable Don Ottavio, Da Ponte himself had to look for a local tenor to perform the role (Sheila Hodges, Lorenzo Da Ponte: The Life and Times of Mozart’s Librettist, University of Wisconsin Press, Madison, 2002, p. 193, ISBN978-0299178741).
books.google.com
Libretto (1825): The cunning lover. L'amante astuto. Opera comica. In due atti. Poesia del Signor Rosich. Musica del Signor Manuel Garzia. New York: E.M. Murden (for the New-York Theatre) (accessible online in books.google). Paolo Rosich, the librettist of L'amante astuto, also sang the role of Anacleto at the New York premiere.
italianopera.org
Source: performance printed libretto, Le Nozze di Figaro, Dramma Giocoso in quattro Atti. Rappresentato in Napoli la Prima Volta Nel Real Teatro del Fondo Nel Mese di Marzo del 1814 /(la Musica è del Celebre Mozart). Napoli: Tipografia Largo del Castello, 1814 (cited by Italianopera – Libretti a stampa)