Giampietrino, probably Giovanni Pietro Rizzoli (active 1495–1549), was a north Italian painter of the Lombard school and Leonardo's circle, succinctly characterized by Sidney J. Freedberg as an "exploiter of Leonardo's repertory."

Giampietrino was a very productive painter of large altarpieces, Madonnas, holy women in half figure, and mythological women. For a long time, the true identity of the artist was unknown; he was only known as a so-called "Giampietrino" whose name appeared in lists of the members of Leonardo's studio.

In 1929, Wilhelm Suida suggested that he could perhaps be Giovanni Battista Belmonte, since a Madonna signed with this name and dated 1509 had been associated stylistically with Giampietrino. Sinc...