In order to continue on analysing the topic of visual sources for the exploration of the Roman catacombs in the 16th century, we present today the manuscript G6, kept in the Vallicelliana Library in Rome.
This is an archival unit of extraordinary importance, which remains unpublished to this day. It consists of 25 sheets, mostly drawn on both sides, and contains late 16th- and early 17th-century copies of some of the paintings in the catacombs of Rome (in particular from those of Domitilla and the Appian Way district), intended for reproduction in Antonio Bosio’s Roma Sotterranea. In addition to these, there are some sheets added later at the time of binding, but evidently of property of Bosio and his editor Giovanni Severano: among these, there is a pen sketch of the full decoration of the so-called niche of the Virgin in the Catacomb of Priscilla, with notes by Severano, discussed here.
These reproductions in watercolour of some of the paintings of the catacombs were evidently commissioned by Bosio to derive copper basis for the engravings, with the aim of illustrating his Roma Sotterranea. Its structure is not easy to understand and little can be said about the identity of the artists/copyists, who evidently worked in the catacombs without the direct supervision of Bosio. Among the authors, the famous copyists of Bosio are currently considered plausible, Giovanni Angelo Santini (better known as Toccafondo) and Sante Avanzini (for the both of them, more information can be found here).