Among the many personalities involved in the study of the Roman catacombs in the first half of the 17th century, Giovanni Severano (priest of the Oratory of San Filippo Neri) is one of the best known but at the same time least understood.
Recently, some studies have been carried out to re-evaluate his figure. Over the centuries he has in fact been considered only as the editor who completed Antonio Bosio’s Roma Sotterranea, left unfinished at the author’s death in 1629 and published by father Severano only in 1634.
Extensive studies have shown that, in the process of completing Roma Sotterranea, he personally explored many areas of the Roman catacombs to confirm and expand Bosio’s descriptions. For example, there is ample evidence of his explorations of the catacomb of Saints Marcellinus and Peter on the Via Labicana. Here, he explored many areas that had not been recorded by Bosio.

Some traces of his explorations and, in particular, some drawings of Christian antiquities commissioned by Severan can be seen here.
The most up-to-date biography of Giovanni Severano can be found here.