(14 infrared reflectography

Juana is almost entirely absent from the literature on Hieronymus Bosch but she was in the Netherlands from 1496 to 1506 as the wife of Felipe el Hermoso, and he signed a contract to buy a Last Judgment triptych (which if it was ever painted is now lost), making him the artist's only identified patron. Also, Juana's mother Isabel la Católica and her sister-in-law Margaret of Austria both owned Bosch paintings. It was news to art historians a few years ago when it was established that someone was painted out of a Bosch or Bosch-studio painting and replaced with a plant, and it seems as though the possibility that Juana knew of such things cannot be ruled out. It looks as though, for whatever reason, the artist's goal was to make the painted-out person look as ridiculous as possible.
The drawing and photograph reproduced here are from Roger van Schoute and Monique Verboomen, Jérôme Bosch. There is also a detailed article on the technical study by Maria Dolores Fuster Sabater.