(Horatio), an Italian painter, was born at Pisa in 1563. After having made himself famous at Florence, Rome, Genoa, and other parts of Italy, he removed to Savoy; from whence he went to France, and at last, upon the invitation of Charles I., came over to England. He was well received by that king, who appointed him lodgings in his court, together with a considerable salary; and employed him in his palace at Greenwich, and other public places. The most remarkable of his performances in England, were the ceilings of Greenwich and York-house. He did also a Madonna, a Magdalen, and Lot with his two daughters, for king Charles; all which he performed admirably well. After the death of the king, when his collection was exposed to sale, nine pictures of Gentileschi were sold for 600l. and are now said to be the ornaments of the hall in Marlborough-house. His most esteemed piece abroad was the portico of cardinal Bentivoglio's palace at Rome. He made several attempts in face-painting, but with little success; his talent lying altogether in histories, with figures as big as the life. He was much in favour with the duke of Buckingham, and many others of the nobility. After 12 years continuance in England, he died there at 84 years of age, and was buried in the queen's chapel at Somerset-house. His print is among the heads of Vandyke, he having been drawn by that great master. He left behind him a daughter, Artemisia Gentileschi, who was but little inferior to her father in history-painting, and excelled him in portraits.