The work in this chapel finished, the Bishop, either in jest or for some other reason known only to himself, commanded that Buffalmacco should paint him, on one wall of his palace, an eagle on the back of a lion which it had killed. The crafty painter, having promised to do all that the Bishop wished, had a good scaffolding made of planks, saying that he refused to be seen painting such a thing. This made, shutting himself up alone inside it, he painted, contrary to what the Bishop wished, a lion that was tearing to pieces an eagle; and, the work finished, he sought leave from the Bishop to go to Florence in order to get some colours that he was wanting. And so, locking the scaffolding with a key, he went off to Florence, in mind to return no more to the Bishop, who, seeing the business dragging on and the painter not returning, had the scaffolding opened, and discovered that Buonamico had been too much for him. Wherefore, moved by very great displeasure, he had him banished on pain of death, and Buonamico, hearing this, sent to tell him to do his worst; whereupon the Bishop threatened him to a fearful tune. But finally, remembering that he had begun the playing of tricks and that it served him right to be tricked himself, he pardoned Buonamico for his insult and rewarded him liberally for his labours. Nay, what is more, summoning him again no long time after to Arezzo, he caused him to make many works in the Duomo Vecchio, which are now destroyed, treating him ever as his familiar friend and very faithful servant. The same man painted the niche of the principal chapel in the Church of S. Giustino, also in Arezzo.
Some writers tell that Buonamico being in Florence and often frequenting the shop of Maso del Saggio with his friends and companions, he was there, with many others, arranging the festival which the men of the Borgo San Friano held on May 1 in certain boats on the Arno; and that when the Ponte alla Carraia, which was then of wood, collapsed by reason of the too great weight of the people who had flocked to that spectacle, he did not die there, as many others did, because, precisely at the moment when the bridge collapsed on to the structure that was representing Hell on the boats in the Arno, he had gone to get some things that were wanting for the festival.
Being summoned to Pisa no long time after these events, Buonamico painted many stories of the Old Testament in the Abbey of S. Paolo a Ripa d'Arno, then belonging to the Monks of Vallombrosa, in both transepts of the church, on three sides, and from the roof down to the floor, beginning with the Creation of man, and continuing up to the completion of the Tower of Nimrod. In this work, although it is to-day for the greater part spoilt, there are seen vivacity in the figures, good skill and loveliness in the colouring, and signs to show that the hand of Buonamico could very well express the conceptions of his mind, although he had little power of design. On the wall of the right transept which is opposite to that wherein is the side door, in some stories of S. Anastasia, there are seen certain ancient costumes and head-dresses, very charming and beautiful, in some women who are painted there with graceful manner. Not less beautiful, also, are those figures that are in a boat, with well-conceived attitudes, among which is the portrait of Pope Alexander IV, which Buonamico had, so it is said, from Tafo his master, who had portrayed that Pontiff in mosaic in S. Pietro. In the last scene, likewise, wherein is the martyrdom of that Saint and of others, Buonamico expressed very well in the faces the fear of death and the grief and terror of those who are standing to see her tortured and put to death, while she stands bound to a tree and over the fire.
A companion of Buonamico in this work was Bruno di Giovanni, a painter, who is thus called in the old book of the Company; which Bruno (also celebrated as a gay fellow by Boccaccio), the said scenes on the walls being finished, painted the altar of S. Ursula with the company of virgins, in the same church. He made in one hand of the said Saint a standard with the arms of Pisa, which are a white cross on a field of red, and he made her offering the other hand to a woman who, rising between two mountains and touching the sea with one of her feet, is stretching both her hands to her in the act of supplication; which woman, representing Pisa, and having on her head a crown of gold and over her shoulders a mantle covered with circlets and eagles, is seeking assistance from that Saint, being much in travail in the sea. Now, for the reason that in painting this work Bruno was bewailing that the figures which he was making therein had not the same life as those of Buonamico, the latter, in his waggish way, in order to teach him to make his figures not merely vivacious but actually speaking, made him paint some words issuing from the mouth of that woman who is supplicating the Saint, and the answer of the Saint to her, a device that Buonamico had seen in the works that had been made in the same city by Cimabue. This expedient, even as it pleased Bruno and the other thick-witted men of those times, in like manner pleases certain boors to-day, who are served therein by craftsmen as vulgar as themselves. And in truth it seems extraordinary that from this beginning there should have passed into use a device that was employed for a jest and for no other reason, insomuch that even a great part of the Campo Santo, wrought by masters of repute, is full of this rubbish.