Persons known by name
Sirleto, Guglielmo
Guglielmo Sirleto
- cardinal
- close friend of Marcello Cervini and one of his successors as cardinal librarian of the Vatican Library
- prefect of the Vatican Library
- mentioned in a letter by Orsini (cited in [Egio 1555]) as a member of the Matal's network in Rome.
- Sirleto stood in contact with Daniele Barbaro (see. [Cardinali 2017.1])
- president of the papal commission installed by Gregor XIII for the reform of the calendar
- entry in Enciclopedia Italiana (Treccani)