The present church of S.Giovanni dei Fiorentini in Strada Giulia is the work of Giacomo della Porta, with a facade by Alessandro Galilei.
Of Tiberio Calcagni, the young Florentine sculptor and architect, who acted like a kind of secretary or clerk to Michelangelo, something may here be said.

The correspondence of this artist with Lionardo Buonarroti shows him to have been what Vasari calls him, "of gentle manners and discreet behaviour." He felt both veneration and attachment for the aged master, and was one of the small group of intimate friends who cheered his last years.

We have seen that Michelangelo consigned the shattered Pieta to his care; and Vasari tells us that he also wished him to complete the bust of Brutus, which had been begun, at Donato Giannotti's request, for the Cardinal Ridolfi.

This bust is said to have been modelled from an ancient cornelian in the possession of a certain Giuliano Ceserino.
Michelangelo not only blocked the marble out, but brought it nearly to completion, working the surface with very fine-toothed chisels.

The sweetness of Tiberio Calcagni's nature is proved by the fact that he would not set his own hand to this masterpiece of sculpture.