Claim: Renaissance art involved Piero della Francesca.
Evidence: The serendipitous presence within the region of Florence in the early 15th century of certain individuals of artistic genius , most notably Masaccio , Brunelleschi , Ghiberti , Piero della Francesca , Donatello and Michelozzo formed an ethos out of which sprang the great masters of the High Renaissance , as well as supporting and encouraging many lesser artists to achieve work of extraordinary quality.