Luigi Lanzi,
The History of Painting in Italy…
“ We there behold copious productions executed in fresco, and among them several portraits of the Gonzaga family, still in good preservation; and some Genii drawn over a door-way, so joyous, animated, and airy, that nothing can be supposed to surpass them. Among collections of art we more rarely meet with specimens of him than is really believed, his genuine hand being recognized, not only by its lightness, by its rectilinear folds, or by its yellowish landscape, spread with certain minute and broken little stones; but by the skill of its design and the delicacy of its pencil. ”

