Carlo Maratta

The palaces of Ottoboni and Pamphili were extraordinary galleries in their own right, and he developed both genuine connoisseurship and personal friendships with the leading painters of Rome.

His closest artistic friend was Carlo Moratti, the most celebrated portraitist of late Baroque Rome, who painted Corelli's portrait more than once.

Corelli also knew Carlo Signani, another major painter of the period.

These were not casual acquaintances formed through palace proximity.