Claim: Giovanni Buonaventrua (born July 15, 1638) Viviani was in Naples as a director of a troupe of opera singers between 1678 and 1679 and 1681 and 1682, and was maestro di cappella to the Prince of Bisignano in 1686.
Evidence: Giovanni Buonaventura Viviani (15 July 1638 Florence –about 1693 Pistoia) was an Italian composer and violinist. Between 1678 and 1679 and 1681 and 1682 he was in Naples as director of a troupe of opera singers, and while he was there he performed some of his own operas and oratorios. In 1686 he was maestro di cappella to the Prince of Bisignano.