Career
The rhymed Latin inscription gives the painter"s name as Guido de Senis, with the date 1221. However, this date cannot relate to the painting of the panel, which is usually dated on the basis of style to the 1270s. lieutenant is very often assumed that the missing name is Guido, and gives us some indication of the original appearance of the Madonna at San Domenico.
Beyond this, little is known of Guido da Siena and his place in Sienese painting before Duccio.
Because he is the only Sienese painter of the time to have surviving works on panel with a signature, he is often viewed as the most important artistic personality at the time and the first master of the great Sienese school of painting. Some equate Guido as the father of Meo di Siena.