Jacopo Sansovino, when Tribolo, now restored to health, went to work under him, was executing in the Office of Works of S. Maria del Fiore, in competition with Benedetto da Rovezzano, Andrea da Fiesole, and Baccio Bandinelli, the marble statue of S. James the Apostle which is still to be seen at the present day at that place together with the others. And thus Tribolo, with these opportunities of learning, by working in clay and drawing with great diligence, contrived to make such proficience in that art, for which he felt a natural inclination, that Jacopo, growing to love him more and more every day, began to encourage him and to bring him forward by making him execute now one thing and now another. Whereupon, although Sansovino had in his workshop at that time Solosmeo da Settignano and Pippo del Fabro, young men of great promise, seeing that Tribolo, having added skill in the use of chisels to his good knowledge of working in clay and in wax, not only equalled them but surpassed them by a great measure, he began to make much use of him in his works. And after finishing the Apostle and a Bacchus that he made for the house of Giovanni Bartolini in Gualfonda, and undertaking to make for M. Giovanni Gaddi, his intimate friend, a chimney-piece and a water-basin of hard sandstone for his house on the Piazza di Madonna, he caused some large figures of boys in clay, which were to go above the great cornice, to be made by Tribolo, who executed them so extraordinarily well, that M. Giovanni, having seen the beautiful manner and the genius of the young man, commissioned him to execute two medallions of marble, which, finished with great excellence, were afterwards placed over certain doors in the same house. Meanwhile there was a commission to be given for a tomb, a work of great magnitude, for the King of Portugal; and since Jacopo had been the disciple of Andrea Contucci of Monte Sansovino, and had the reputation not only of having equalled his master, a man of great renown, but of having a manner even more beautiful, that work, through the good offices of the Bartolini, was allotted to him. Whereupon Jacopo made a most superb model of wood, all covered with scenes and figures of wax, which were executed for the most part by Tribolo; and these proving to be very beautiful, the young man's fame so increased that Matteo di Lorenzo Strozzi--Tribolo having now left Sansovino, thinking that he was by that time able to work by himself--commissioned him to make some children of stone, and shortly afterwards, being much pleased with them, two of marble that are holding a dolphin which pours water into a fish-pond, a work that is now to be seen at San Casciano, a place eight miles distant from Florence, in the villa of that M. Matteo.