Giovanni Ambrogio de Predis

Giovanni Ambrogio de Predis was born around 1455 in Milan or possibly Preda, into a family of Lombard artists. Little is known about his early training beyond the fact that he first worked as an illuminator alongside his half-brother Cristoforo de Predis, also a book illuminator, and was already active on Books of Hours by 1472 and 1474.

He went on to serve as court painter to Duke Ludovico Maria Sforza in Milan, working chiefly as a portraitist and miniaturist and also designing coins. His reputation rests in large part on a single documented commission: in 1483 he and Cristoforo contracted with Leonardo da Vinci to produce an altarpiece for the confraternity of San Francesco Grande in Milan, the work that became the Virgin of the Rocks. The de Predis brothers are understood to have painted the side panels of angels that originally flanked Leonardo's central panel, now held by the National Gallery, London. The commission led to a protracted payment dispute that stretched into the early 1500s.

His only signed and dated surviving work is a profile portrait of Emperor Maximilian I, now in the Kunsthistorisches Museum, Vienna, painted in connection with the marriage negotiations between the Sforza court and the Habsburgs. The last confirmed documentary trace of him places him alive after 1508, probably in Milan. No source establishes an exact death date, and the artist should be understood as deceased sometime after 1508, with the precise date and circumstances undocumented in current scholarship.

Modern scholarship on de Predis centers less on aesthetic judgment than on attribution. Because his career is so closely entangled with Leonardo da Vinci's Milan workshop, museums tend to hedge attributions to him rather than assert them outright. The recurring scholarly question is how to separate his independent hand, seen most clearly in the signed Maximilian I portrait, from work produced collaboratively within the Sforza court and the Leonardo circle. No verbatim, attributable critical quotation meeting sourcing standards could be located for this profile.

There is no reliably documented all-time auction record for Giovanni Ambrogio de Predis that can be confirmed from public sources. Christie's has listed an Old Master lot, "Portrait of a gentleman, bust-length, viewed in profile," catalogued under the artist's name, but the lot page does not disclose a price or sale date that could be verified from available sources. Aggregator listings show additional past auction appearances under his name in the Old Masters category, but no source discloses a verified price, work title, house, and date together. Any published price for this artist should be treated as unconfirmed until a specific, dated sale with house, price, and currency can be verified.

This is a historical Old Master with a small, museum-concentrated body of work and no catalogue raisonne, which means attribution carries more weight than it would for a better-documented artist. There is no confirmed public auction benchmark to anchor value expectations, and works offered as by de Predis should be vetted through Old Master specialists and the relevant museum scholarship rather than compared to a public price history that, on current evidence, does not exist in verifiable form.