To be compared with a series of forty-four similar portraits, removed from the Palace of San Martino Gusnago, between Mantua and Brescia, where they formed part of a ceiling decoration. Six of this series are in the Victoria and Albert Museum, London, and a further twelve are in the Metropolitan Museum of Art, New York. This series is thought to be the work of a Lombard artist, active in the first quarter of the 16th century, for which see F. Zeri and E. E. Gardner, A Catalogue of the Collection of the Metropolitan Museum of Art; North Italian School, 1986, pp. 72/74, figs. 59/61

See illustration of one