Now it came to pass in the year 1326, as it has been said in his Life, that Giotto was called by means of Charles, Duke of Calabria, who was then staying in Florence, to Naples, in order to make some things for King Robert in S. Chiara and other places in that city; wherefore Giotto, passing by way of Orvieto on his way to Naples, in order to see the works that had been made and were still being made there by so many men, wished to see everything minutely. And because the prophets of Agostino and Agnolo of Siena pleased him more than all the other sculptures, it came about therefore that Giotto not only commended them and held them, much to their contentment, among his friends, but also presented them to Piero Saccone da Pietramala as the best of all the sculptors then living, for the making of the tomb of Bishop Guido, Lord and Bishop of Arezzo, which has been mentioned in the Life of Giotto himself. And so then Giotto having seen in Orvieto the works of many sculptors and having judged the best to be those of Agostino and Agnolo of Siena, this was the reason that the said tomb was given to them to make—in that manner, however, wherein he had designed it, and according to the model which he himself had sent to the said Piero Saccone. Agostino and Agnolo finished this tomb in the space of three years, executing it with much diligence, and built it into the Church of the Vescovado of Arezzo, in the Chapel of the Sacrament. Over the sarcophagus, which rests on certain great consoles carved more than passing well, there is stretched the body of that Bishop in marble, and at the sides are some angels that are drawing back certain curtains very gracefully. Besides this, there are carved in half-relief, in compartments, twelve scenes from the life and actions of that Bishop, with an infinite number of little figures. I will not grudge the labour of describing the contents of these scenes, to the end that it may be seen with what great patience they were wrought, and how zealously these sculptors sought the good manner.
In the first is the scene when, assisted by the Ghibelline party of Milan, which sent him money and four hundred masons, he is rebuilding the walls of Arezzo all anew, making them much longer than they were and giving them the form of a galley. In the second is the taking of Lucignano di Valdichiana. In the third, that of Chiusi. In the fourth, that of Fronzoli, then a strong castle above Poppi, and held by the sons of the Count of Battifolle. The fifth is when the Castle of Rondine, after having been many months besieged by the Aretines, is surrendering finally to the Bishop. In the sixth is the taking of the Castle of Bucine in Valdarno. The seventh is when he is taking by storm the fortress of Caprese, which belonged to the Count of Romena, after having maintained the siege for several months. In the eighth the Bishop is having the Castle of Laterino pulled down and the hill that rises above it cut into the shape of a cross, to the end that it may no longer be possible to build a fortress thereon. In the ninth he is seen destroying Monte Sansovino and putting it to fire and flames, chasing from it all the inhabitants. In the eleventh is his coronation, wherein are to be seen many beautiful costumes of soldiers on foot and on horseback, and of other people. In the twelfth, finally, his men are seen carrying him from Montenero, where he fell sick, to Massa, and thence afterwards, now dead, to Arezzo. Round this tomb, also, in many places, are the Ghibelline insignia, and the arms of the Bishop, which are six square stones "or," on a field "azure," in the same ordering as are the six balls in the arms of the Medici; which arms of the house of the Bishop were described by Frate Guittone, chevalier and poet of Arezzo, when he said, writing of the site of the Castle of Pietramala, whence that family had its origin:
Dove si scontra il Giglion con la Chiassa Ivi furono i miei antecessori, Che in campo azurro d'or portan sei sassa.
Agnolo and Agostino of Siena, then, executed this work with better art and invention and with more diligence than there had been shown in any work executed in their times. And in truth they deserve nothing but infinite praise, having made therein so many figures and so great a variety of sites, places, towers, horses, men, and other things, that it is indeed a marvel. And although this tomb was in great part destroyed by the Frenchmen of the Duke of Anjou, who sacked the greater part of that city in order to take revenge on the hostile party for certain affronts received, none the less it shows that it was wrought with very good judgment by the said Agostino and Agnolo, who cut on it, in rather large letters, these words:
HOC OPUS FECIT MAGISTER AUGUSTINUS ET MAGISTER ANGELUS DE SENIS.
After this, in the year 1329, they wrought an altar-panel of marble for the Church of S. Francesco at Bologna, in a passing good manner; and therein, besides the carved ornamentation, which is very rich, they made a Christ who is crowning Our Lady, and on each side three similar figures—S. Francis, S. James, S. Dominic, S. Anthony of Padua, S. Petronius, and S. John the Evangelist, with figures one braccio and a half in height. Below each of the said figures is carved a scene in low-relief from the life of the Saint that is above; and in all these scenes is an infinite number of half-length figures, which make a rich and beautiful adornment, according to the custom of those times. It is seen clearly that Agostino and Agnolo endured very great fatigue in this work, and that they put into it all diligence and study in order to make it, as it truly was, a work worthy of praise; and although they are half eaten away, yet there are to be read thereon their names and the date, by means of which, it being known when they began it, it is seen that they laboured eight whole years in completing it. It is true, indeed, that in that same time they wrought many other small works in diverse places and for various people.
Now, while they were working in Bologna, that city, by the mediation of a Legate of the Pope, gave herself absolutely over to the Church; and the Pope, in return, promised that he would go to settle with his Court in Bologna, saying that he wished to erect a castle there, or truly a fortress, for his own security. This being conceded to him by the Bolognese, it was immediately built under the direction and design of Agostino and Agnolo, but it had a very short life, for the reason that the Bolognese, having found that the many promises of the Pope were wholly vain, pulled down and destroyed the said fortress, with much greater promptness than it had been built.
It is said that while these two sculptors were staying in Bologna the Po issued in furious flood from its bed and laid waste the whole country round for many miles, doing incredible damage to the territory of Mantua and Ferrara and slaying more than ten thousand persons; and that they, being called on for this reason as ingenious and able men, found a way to put this terrible river back into its course, confining it with dykes and other most useful barriers; which was greatly to their credit and profit, because, besides acquiring fame thereby, they were recompensed by the Lords of Mantua and by the D'Este family with most honourable rewards.
After this they returned to Siena, and in the year 1338, with their direction and design, there was made the new Church of S. Maria, near the Duomo Vecchio, towards Piazza Manetti; and no long time after, the people of Siena, remaining much satisfied with all the works that these men were making, determined with an occasion so apt to put into effect that which had been discussed many times, but up to then in vain—namely, the making of a public fountain on the principal square, opposite the Palagio della Signoria. Wherefore, this being entrusted to Agostino and Agnolo, they brought the waters of that fountain through pipes of lead and of clay, which was very difficult, and it began to play in the year 1343, on the first day of June, with much pleasure and contentment to the whole city, which remained thereby much indebted to the talent of these its two citizens.
About the same time there was made the Great Council Chamber in the Municipal Palace; and so too, with the direction and design of the same men, there was brought to its completion the tower of