Little is known about Giampietrino and the very use of this name is conjectural, it having been applied to a group of paintings as a result of its appearance in
Leonardo's 'Codex Atlanticus' in a list of Leonardo's pupils.
Although there may be some doubt about their attribution the paintings ascribed to this artist do form a stylistically coherent whole. They reflect the influence of
Marco d'Oggiono,
Cesare da Sesto and above all Leonardo.