"Based on systematic investigation of diplomatic correspondence between Modena and Rome in the age of Cesare d'Este (1598-1628), the volume recounts episodes of sponsorship and patronage, and examines the relationships between the Este and papal courts. The documentary material, which is largely unpublished, is part of the archival collection of the Carteggio Ambasciatori Roma and the Archivio Segreto Estense, located in the Archivio di Stato di Modena."--Abstract, p. [137].