Certainly the head of the line, as far as regards art, was the Magister Giovanni Buoni here mentioned by Vasari, who goes on to say that this Buono in 1152 had been employed on buildings in Ravenna, after which he was called to Naples, where he built the Castel dell' Uovo and Castel Capuano; and that in the time of Doge Domenico Morosini, _i.e._ 1154, he founded the Campanile of S. Marco at Venice, which Vasari asserts was so well built that up to his time it had never moved a hair (_non ha mai mosso un pelo_). Vasari says that Giovanni Buono was in 1166 at Pistoja, where he built the church of S. Andrea. Both Milanesi, Vasari's annotator, and Merzario[185] complain that Vasari was very confused in these statements. The tower of S. Marco was, Cicognara says, by a later Bartolommeo Buono from Bergamo, who also built the Procuratie Vecchie in the sixteenth century. It is curious how Vasari, living in the same century, could have made such a statement; he must have known whether the tower were being built then, or had been standing for several centuries. The fact was that one Buono built the older tower in Venice to which Vasari refers, and the sixteenth-century Bartolommeo Buono was its restorer. The style is certainly antique. Vasari's annotators agree that this Buono worked at Arezzo, where he built the bell-tower, and the ancient palace of the Signoria of Arezzo (_cio è un palazzo della maniera de' Goti_), _i.e._ with large hewn stones; after which he came to Pistoja, where he built S. Andrea and other churches. But even here some confusion exists. It is difficult to decide whether the builder of S. Andrea at Pistoja, and the cathedral of Lucca was indeed named Buono or Gruamonte. There is an inscription on the sculpture of the architrave of the façade which has been a great bone of contention. It proves, however, beyond a doubt that the usual organization, with the _Opera_ as the administrative branch, existed in Pistoja in 1196. It runs--"Fecit hoc opus Gruamons magister bon(us) et Adot ... (Adeodatus) frater ejus. Tunc erāt operarii Villanus et Pathus filius Tignosi A.D. MCIXVI."[186] This work was done by Gruamons, Master Buono, and Adeodatus his brother; Villanus and Pathus, son of Tignosi, being then _operai_ (_i.e._ on the administrative council).