The main personalities in this century were: Dante Alighieri (considered the "father" of the Italian language); Guittone d'Arezzo; Cimabue; Giotto di Bondone; Guido da Siena; Nicola Pisano; Arnolfo di Cambio and others. Giotto, who was an Italian painter and architect from Florence, is generally thought of as the first in a line of great artists of the Italian Renaissance that stretched until Leonardo da Vinci and Michelangelo.