At this time a church dedicated to S. Maria di Loreto was being built at the Macello de' Corbi, near the Column of Trajan, in Rome, and it was brought to perfection by Antonio, with decorations of great beauty. After this, Messer Marchionne Baldassini caused a palace to be erected from the model and under the direction of Antonio, near S. Agostino, which is arranged in such a manner that, small though it may be, it is held to be, as indeed it is, the finest and most convenient dwelling in Rome; and in it the staircases, the court, the loggie, the doors, and the chimney-pieces, are all executed with consummate grace. With which Messer Marchionne being very well satisfied, he determined that Perino del Vaga, the Florentine painter, should decorate one of the halls in colour, with scenes and other figures, as will be related in his Life; which decorations have given it infinite grace and beauty. And near the Torre di Nona Antonio directed and finished the building of the house of the Centelli, which is small, but very convenient. No long time passed before he went to Gradoli, a place in the dominions of the very reverend Cardinal Farnese, where he caused a most beautiful and commodious palace to be erected for that Cardinal. On that journey he did a work of great utility in restoring the fortress of Capo di Monte, which he surrounded with low and well-shaped walls; and at the same time he made the design of the fortress of Caprarola. And the very reverend Monsignor Farnese, finding himself served by Antonio in all these works in a manner so satisfactory, was constrained to wish him well, and, coming to love him more and more, he showed him favour in his every enterprise whenever he was able. After this, Cardinal Alborense, wishing to leave a memorial of himself in the church of his nation, caused a chapel of marble, with a tomb for himself, to be erected and brought to completion by Antonio in S. Jacopo degli Spagnuoli; which chapel, as has been related, was all painted in the spaces between the pilasters by Pellegrino da Modena, and on the altar stood a most beautiful S. James of marble executed by Jacopo Sansovino. This is a work of architecture that is held to be truly worthy of the highest praise, since the marble ceiling is divided very beautifully into octagonal compartments. Nor was it long before M. Bartolommeo Ferratino, for his own convenience and for the benefit of his friends, and also in order to leave an honourable and enduring memorial of himself, commissioned Antonio to build a palace on the Piazza d' Amelia, which is a beautiful and most imposing work; whereby Antonio acquired no little fame and profit. During this time Antonio di Monte, Cardinal of Santa Prassedia, was in Rome, and he desired that the same architect should build for him the palace that he afterwards occupied, looking out upon the Agone, where there is the statue of Maestro Pasquino; and in the centre, which looks over the Piazza, he wished to erect a tower.