Pinturicchio

Bernardino di Betto, called Pintoricchio or Pinturicchio (Italian: 1454–1513) was an Italian painter of the Renaissance. He acquired his nickname, Pintoricchio ("little painter"), because of his small stature, and he used it to sign some of his works. He was born in Perugia, the son of Benedetto or Betto di Blagio. He may have trained under lesser known Perugian painters such as Bonfigli and Fiorenzo di Lorenzo. According to Vasari, Pinturicchio was a paid assistant of Perugino. The works of the Perugian Renaissance school are very similar; and paintings by Perugino, Pinturicchio, Lo Spagna and a young Raphael may often be mistaken one for the other. In the execution of large frescoes, pupils and assistants had a large share in the work, either in enlarging the master's sketch to the full-sized cartoon, in transferring the cartoon to the wall, or in painting backgrounds or accessories. [Source]