Grimaldi, Nicolo a Genoese prelate, was born December 6, 1645. He was at first clerk of the apostolic chamber, and superintendent of the streets and roads of Rome. In 1696 he became prefect of the pontifical almonry. After having made good use of these different employments, he left them to become secretary of the congregation of the bishops and regulars, in 1701. Clement XI made him cardinal, May 17, 1706, and on September 14 following he was made legate of Bologna. After being prefect of the Consultus for several years, he passed over, June 8, 1716, to the order of the cardinal priests. He died October 25, 1717, leaving an immense fortune. See Hoefer, Nouv. Biog. Generale, s.v.