Rogatory Inquiry in a Cause of Saints

The principal inquiry belongs to the competent bishop identified by the norms, but important witnesses or documents may be located elsewhere. If a witness cannot travel to the tribunal without serious inconvenience, the bishop conducting the cause can ask the bishop of the witness's diocese or eparchy to receive the testimony. This request is rogatory: one competent ecclesiastical authority formally asks another to perform a defined evidentiary act. It is not a transfer of the cause and does not create a second, competing investigation.

The request identifies the cause and witness, supplies the approved questions or interrogatories, and explains any documentary or expert task sought. The requested bishop appoints suitable officials under the same standards of qualification, oath, impartiality, and secrecy that govern the principal inquiry. A postulator cannot simply arrange a private interview and call it rogatory evidence. Friendly correspondence between diocesan staff is also insufficient unless the canonical commission and the authentication of the resulting acts can be demonstrated.^[1]

Sanctorum Mater also permits the officials of the principal inquiry to travel and examine the witness in the other jurisdiction. Before doing so, they obtain written permission from the bishop of that place and exhibit it in the session's acts. This route preserves the original tribunal's personnel while respecting the local ordinary's authority. The choice between a locally constituted rogatory inquiry and travel by the principal officials turns on distance, health, costs, language, security, and the integrity of the evidence—not on which route might produce friendlier testimony.^[2]

Whichever method is used, the witness takes the required oath, is questioned without coaching, identifies how facts are known, and is given the normal opportunity to review or correct the deposition. Documents are marked and authenticated; translators and experts are appointed rather than improvised. The promoter of justice's interrogatories and any additional lawful questions remain directed toward completeness, including contrary evidence. Geographic separation does not lower the standard of proof or permit omitted procedural steps that would be visible at the main tribunal.

When the requested diocese conducts the sessions, it retains the archetype in its archive and sends an authenticated transcript to the requesting bishop according to the secure procedures for causes. The acts should show the initial request, decrees of appointment, oaths, citations, sessions, exhibits, closure, comparison, and sealing. The principal inquiry then incorporates the authenticated material into its own evidentiary record. This chain allows Roman examiners to verify both who exercised authority and whether the words transmitted are traceable to duly constituted acts.

Rogatory inquiry should not be confused with gathering a written testimonial letter. A spontaneous letter can be documentary evidence, but it has not undergone examination under oath and follow-up questions. Nor is the procedure a device for evading a reluctant or unavailable witness, local safeguarding obligations, or restrictions on protected archives. It is a limited form of episcopal cooperation serving the same historical truth as the principal inquiry, with the same respect for conscience, reputation, and lawful confidentiality.^[3]