BORGOGNONE, AMBROGIO (1l. , Italian painter of the Milanese school, whose real name was Ambrogio Stefani da Fossano, was approximately contemporary with Leo nardo da Vinci, but represented, at least during a great part of his career, the tendencies of Lombard art anterior to the arrival of that master—tendencies from his predecessors Foppa and Zenale, which he had adopted and perfected. His fame is principally associated with that of one great building, the Certosa, at Pavia, for which he worked much and in many different ways. He seems to have lived there from 1486 to 1494, when he returned to Milan. Only one known picture, an altar-piece at the church of San Eus torgio, can with probability be assigned to a period of his career earlier than 1486. For two years after his return to Milan he worked at the church of San Satiro in that city. From 1497 he was engaged for some time in decorating with paintings the church of the Incoronata in the neighbouring town of Lodi. Thenceforth references in regard to him are few and far between. In 1508 he painted for a church in Bergamo; in 1512 his signature appears in a public document of Milan; in 1524—and this is the last authentic record—he painted a series of frescoes in the portico of San Simpliciano at Milan illustrating the life of St. Sisinius. The National Gallery, London, has two fair examples of his work—the separate fragments of a silk banner painted for the Certosa, and containing the heads of two kneeling groups of men and women, and a large altar-piece of the marriage of the two SS. Catherine, painted for the chapel of Rebecchino, near Pavia.