Identifying and Censoring Improper Artworks in Carlo Borromeo’s Diocese. The Sixteenth-Century Index of Profane Paintings in the Milan Diocesan Archives

Due to the elusive nature of the surviving documentation, it is often difficult to assess in what areas and to what extent the Tridentine prescriptions on sacred images led to acts of censorship directed at works of art. The Milanese diocese at the time of Archbishop Carlo Borromeo (1564–84) stands out as a rare case for which policies concerning the control of sacred art and their practical implementation are relatively well documented. This article examines Borromeo’s legislation on religious artworks and how it was translated into practice, highlighting the role played by the administrative system of his diocese in the effort to identify and censor inappropriate works of art. I bring to light these dynamics through an in-depth analysis of the so-called Index of Profane Paintings, a document recording the results of a systematic enquiry into artworks that did not comply with Tridentine standards, carried out in the Milanese diocese under Borromeo. Despite being the only known evidence of an investigation of this kind made in the sixteenth century, this document has been largely ignored by art historians. I discuss the date and circumstances in which the Index was compiled, as well as the methods and targets of the enquiry it records. I then examine the problems raised by the artworks denounced and the solutions envisaged for them, exploring their relationship with contemporary religious and visual culture. A revised transcription and an English translation of the document are given in the Appendices.