Claim: Giovanni Buonaventrua 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: 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.