Lives of the Most Excellent Painters, Sculptors, and Architects
He was a student of Domenico Ghirlandaio (1449–1494), and the brother of painter Francesco Torni (1492–1560). Jacopo assisted Michelangelo in painting the ceiling of the Sistine Chapel in Rome, and, according to Giorgio Vasari in his "Lives of the Most Excellent Painters, Sculptors, and Architects", “lived in very close intimacy with Michelangelo” (Jonathan Foster translation). Jacopo is known to have collaborated with the painter Bernardino Pinturicchio (ca. 1452-1513).