A Regionarius (plural: Regionarii) was a specific administrative and ecclesiastical official in late antique and early medieval Rome. The term, derived from the Latin regio (region or district), refers to a notary or scribe assigned to one of the seven ecclesiastical regions into which the city of Rome was divided.
These officials were members of the schola notariorum, a college of professional scribes, clerks, and notaries who served the Roman Church, particularly the Pope and the Roman Curia. Each regionarius was responsible for a range of administrative and archival duties within their designated region. These duties typically included:
- Recording official acts and decrees.
- Maintaining ecclesiastical registers and archives.
- Serving as legal witnesses to documents and transactions.
- Assisting with the communication and enforcement of papal directives within their region.
- Participating in liturgical ceremonies, often in the capacity of reading or recording.
The role of the regionarii was vital for the effective administration of the extensive Roman diocese and for the preservation of its legal, historical, and liturgical records. They formed an important part of the early bureaucratic structure of the Papacy, reflecting the sophisticated organizational system developing within the Church during this period.