by Giacomo Ormanni; and in the same year we read of the dispute with his workmen, to which we have alluded above. In 1497–98, he also executed two of the bronze angels[184] for the High Altar of the Duomo. The celebrated sculptor, Lorenzo di Mariano, better known as _Il Marrina_, was one of his pupils. 25. 1473. _Bartolommeo de’ Domenico Calabrone._ 26. 1473. _Francesco di Bartolommeo._ Both these men appear to have been sculptors, and are associated together, as arbitrators, with Urbano da Cortona, in the dispute referred to above, between Giovanni di Stefano and his workmen. Of the former, we also find a record, under date August 11th, 1507, as arbitrator between Lorenzo di Mariano (_Il Marrina_) and Battista di Simone,[185] and we are told that he was surnamed _Baccelli_, and died in 1531.[186] Of Francesco we know nothing more, except that he also signed the contract with the Lombard sculptors. 27. 1482. _Giuliano di Biagio._ Of this artist, we know nothing, beyond the reference to his work on the Pavement, of which mention has been made above. He appears, however, to have been not merely the mason, but also the contractor, who procured the marble for his own work.[187] 28. 1482. _Vito di Marco._ A German, who, with his brother Giovanni, came to settle in Siena, as a mason. He was, as we have seen above, a pupil of Antonio Federighi, and was employed under him, on the works at Orvieto. In 1473, he was also party to the contract between the Sienese and Lombard sculptors. In 1483–84, he was commissioned, in company with a certain Lucillo di Maestro Marco, to execute the tomb of Tommaso del Testa Piccolomini, Bishop of Pienza and Montalcino,[188] which commission, through his absence from Siena, and the death of Lucillo, was transferred in the following year to Neroccio di Bartolommeo Landi. In 1487, he executed the façade of the church of S. Andrew at Orvieto, in which city we find him still working in 1489–91. He died in 1495. 29. 1482. _Luigi di Ruggiero, surnamed L’Armellino._ This man also joined in the above-mentioned contract with the Lombard stone workers (1473). In January, 1486–87, we find the Signoria of Siena writing to Ottaviano, Count of Mercatelli, on his behalf, for arrears of salary due to him for work done.[189] He also appears to have been a contractor, as well as a sculptor.[190] 30. 1483. _Bastiano di Francesco di Sano._