Martinengo Altarpiece also peeping from behind the throne, on the left. There is a total of ten saints, including St. Alexander, eponymous of the donor, portrayed with a scintillating armor and, perhaps, with the face of Martinengo himself. His wife Barbara is also portrayed next to him, as the saint with the same name. The two child angels in the low foreground are a typical element in Lotto's works. The work is signed and dated "Laurentius / Lotus / M.D.XVI". The following panels, located in other places, are usually associated with the work: Martinengo Altarpiece The Martinengo Altarpiece is a painting by
San Marco Altarpiece San Marco Altarpiece The San Marco Altarpiece (also known as "Madonna and Saints") is a painting by the Italian early Renaissance painter Fra Angelico, housed in the San Marco Museum of Florence, Italy. It was commissioned by Cosimo de' Medici the Elder, and was completed sometime between 1438 and 1443. In addition to the main panel depicting the enthroned Virgin and Child surrounded by Angels and Saints, there were 9 predella panels accompanying it, narrating the legend of the patron saints, Saints Cosmas and Damian. Only the main panel actually remains to be seen in the Convent of San Marco,