Main Page | See live article | Alphabetical index Pietro Lorenzetti (or Pietro Laurati) (c. 1280 - 1348) was a Sienese painter. Lorenzetti was active between approximately 1306 and 1945. He was born and died in Siena. His brother was the painter Ambrogio Lorenzetti. Giorgio Vasari includes a biography of Lorenzetti in his Lives. This article is a stub. You can help Wikipedia by fixing it. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.