The case record
What was reported?
A closely guarded prisoner died in the Bastille in 1703 after decades in state custody. His identity remains debated, while the famous iron mask belongs partly to the story’s later development.
Records associate the prisoner with the custody of Bénigne de Saint-Mars and transfers between fortresses. References to a concealed face became entangled with theories of a royal twin and other dramatic identities. The surviving documentary description supports a velvet mask more clearly than an iron one.
Range covers the generally associated custody history; Paris marks the final prison, not all locations.
- Reported date
- 1669–1703
- Witnesses
- Historical records, investigators and observers; see case-specific account · Not reliably reducible to a single count
- Investigation
- Historical and research accounts reviewed from: Wikisource / Encyclopaedia Britannica
Evidence in the record
Official correspondence and the Bastille lieutenant’s journal provide a real historical core. Names such as Eustache Dauger occur in the record, but linking a recorded name to a complete biography remains contested.
Competing explanations
Official and research context
Surviving prison records establish a concealed prisoner but do not produce a universally accepted identification; later royal-twin stories are not documentary findings.
Conventional explanations
An obscure servant or politically sensitive detainee is more compatible with some records than a secret brother of Louis XIV. Prison secrecy and later literary invention can explain the legend’s growth without requiring a royal substitution.
Arguments that remain contested
The prisoner’s full identity and the state’s precise reason for exceptional secrecy remain disputed.
Locations & timeline
Coordinates are representative. Area and route labels do not imply exact paths or object positions.
- Primary reference location
Former Bastille area
Range covers the generally associated custody history; Paris marks the final prison, not all locations.
Representative case location · Approximate area radius: 2 km
48.850°, 2.370° · point · Regional reference only; not survey-grade
Record notes
Map coordinates are representative and do not establish an exact incident position.
Case-specific sources researched 8 September 2026. Evidence, alternatives, dates and representative geography reviewed.
Original dataset status: unresolved