No other Sienese sculptor of the Quattrocento approaches Giacomo's solitary greatness. Pietro del Minella (1391-1458) was his favourite pupil and assistant, but caught little of his spirit. The two Turini--Turino di Sano and his son Giovanni (1384-1455)--were associated with him on the work for the Baptistery, and acquitted themselves creditably, even by the side of Donatello and Ghiberti. Then come two men of greater mark: Antonio Federighi (died about 1480), and Lorenzo di Pietro (1412-1480), called Il Vecchietta. The former, who is said to have been connected with the Tolomei, was also an architect, as the "grandiose simplicity" of the Loggia that he built for Pius II. shows; as a sculptor, he is perhaps the most classical of the Sienese masters of the Quattrocento, following not unworthily in the steps of both Giacomo della Quercia and Donatello. Vecchietta appears to have been actually Giacomo's pupil; his principal works are in bronze, somewhat hard and dry in style, with excessive attention to anatomical details. Giovanni di Stefano (died after 1498) and Urbano da Cortona (died 1504), by the latter of whom are some tolerable works in the Duomo and elsewhere, are conscientious _scarpellini_, with no original genius. To Francesco di Giorgio Martini (1439-1502), the pupil of Vecchietta, are ascribed--frequently on no adequate grounds--a number of the chief buildings in Siena in the style of the earlier Renaissance; as a military architect, he stands high among the craftsmen of his century, and was much employed by the Dukes of Urbino. Like his master Vecchietta, he was also a worker in bronze and a painter. Of his fellow-pupil Neroccio di Bartolommeo Landi (1447-1500), it will be best to speak among the painters; his few extant works in sculpture have a peculiar combination of dignity and sweetness, which is at once impressive and winning. Giacomo Cozzarelli (1453-1515) was a pupil of Francesco di Giorgio; he designed the famous palace of Pandolfo Petrucci and made those wonderful torch-holders and other metal work for its exterior, which are only surpassed by Caparra's masterpieces in this kind on the palace of Filippo Strozzi at Florence. Lorenzo di Mariano, called Il Marrina (died in 1534), is the last great sculptor of the Sienese Renaissance; as a decorator in marble he has few if any equals, and his masterpiece in the oratory of Fontegiusta need not fear the comparison with the best Florentine work of the epoch. Nor should we pass from the sculptors without a word on the wood-carvers, who are among the minor artistic glories of Siena. Domenico di Niccolò (who died about 1450), called Del Coro from his work in the chapel of the Palazzo del Comune, Antonio Barili (died 1516), and Giovanni Barili (died 1529), produced work in this kind which is hardly surpassed in any Italian city of the Renaissance.