Buononcini's last opera, _Astyanax_, was produced in 1727, after which the Duchess of Marlborough, his constant patroness, gave the composer a pension of five hundred a year. A few years afterwards, however, he stole a madrigal, the invention of a Venetian named Lotti, and the theft having been discovered and clearly proved, Buononcini left the country in disgrace. Similar thefts are practised in the present day, but with discretion and with ingeniously worded title pages. Buononcini should have simply called his plagiarism a "Venetian Madrigal, dedicated to the Duchess of Marlborough by G. Buononcini." This unfortunate composer, whom Swift had certainly described in a prophetic spirit as "a ninny," left England in 1733, with an Italian Count whose title appears to have been about as authentic as Buononcini's madrigal, and who pretended to possess the art of making gold, but abstained from practising it otherwise than by swindling. Buononcini was for a time the dupe of this impostor. In the meanwhile he continued the exercise of his profession, at Paris, where we lose sight of him. In 1748, however, he went to Vienna, and by command of the Emperor composed the music for the festivities given in celebration of the peace of Aix-la-Chapelle. Thence he proceeded with Montecelli, the composer, to Venice, where the affair of the madrigal was probably by this time forgotten. At all events, no importance was attached to it, and Buononcini was engaged to write an opera for the Carnival. He was at this time nearly ninety years of age. The date of his death is not recorded, but Dr. Burney tells us that he is supposed to have lived till nearly a hundred. [Sidenote: THE BEGGARS' OPERA.]