The matter disturbs his mind greatly, chiefly on account of Urbino, because he has brought him up, and also because of the time wasted over "their ignorance and bestial stupidity." The dispute was finally settled by the intervention of three master-masons (acting severally for Michelangelo, Urbino, and Giovanni), who valued the respective portions of the work.
I must interrupt this narrative of the tomb to explain who some of the persons just mentioned were, and how they came to be connected with Buonarroti.

Donato Giannotti was the famous writer upon political and literary topics, who, after playing a conspicuous part in the revolution of Florence against the Medici, now lived in exile at Rome.
His dialogues on Dante, and Francesco d'Olanda's account of the meetings at S.Silvestro, prove that he formed a member of that little circle which included Michelangelo and Vittoria Colonna.

Luigi del Riccio was a Florentine merchant, settled in the banking-house of the Strozzi at Rome.

For many years he acted as Michelangelo's man of business; but their friendship was close and warm in many other ways.
They were drawn together by a common love of poetry, and by the charm of a rarely gifted youth called Cecchino dei Bracci.

Urbino was the great sculptor's servant and man of all work, the last and best of that series, which included Stefano Miniatore, Pietro Urbino, Antonio Mini.