We know some by their Christian names; some by their surnames; some by their nicknames; some by the names of their towns, and some by the names of their masters.

Tommaso Bigordi, a goldsmith, was so clever in designing a pretty garland for women's hair that he was called Ghirlandaio, the garland-maker, and his painter son Domenico is therefore known for ever as Uomenico Ghirlandaio.

Paolo Doni, a painter of battle scenes, was so fond of birds that he was known as Uccello (a bird) and now has no other name; Pietro Vannucci coming from Perugia was called Perugino; Agnolo di Francesco di Migliore happened to be a tailor with a genius of a son, Andrea; that genius is therefore Andrea of the Tailor--del Sarto--for all time.

And so forth.
To return to Botticelli.

In 1447, when he was born, Fra Angelico was sixty; and Masaccio had been dead for some years.