Pietro Lorenzetti | National Gallery of Art https://www.nga.gov/artists/1492-pietro-lorenzetti
The art historical literature generally asserts that the great Sienese painter cited in a document of 1320 as “Petrus quondam Lorenzetti � and who signed himself as “Petrus Laurentii� is to be identified with the Petruccio di Lorenzo paid in 1306 for a panel, now lost, painted for the Sienese government. If that is the case, then his date of birth is unlikely to have been any later than 1280.[1] The prestigious commission presupposes, in fact, that he must have been a well-established artist by this date.
execution, was replaced in the nineteenth century by another bearing a date in Roman
