Vincentio di Vivaldi was the only son of the Marchese di Vivaldi, a nobleman of one of the most ancient families of the kingdom of Naples, a favourite possessing an uncommon share of influence at Court, and a man still higher in power than in rank. His pride of birth was equal to either, but it was mingled with the justifiable pride of a principled mind; it governed his conduct in morals as well as in the jealousy of ceremonial distinctions, and elevated his practice as well as his claims. His pride was at once his vice and his virtue, his safeguard and his weakness.