Pierre Henri

Author of La Vie et l'Oeuvre de Louis Braille, a Braille biography published around 1952 — the centenary of Braille's death and the year his remains were transferred to the Panthéon. Confirmed at Tier 1 (a 2024 recorded interview with historian Philippa Campsie, and the abstract of her peer-reviewed article) as one of two prior accounts — with Alexandre-René Pignier's 1859 retirement memoir — that Campsie's research identifies as distorting the historical record of Charles Barbier and Louis Braille. He is the still-unresolved half of the vault's transmission-chain question: the specific allegation that he floated a hedged military-origin speculation later popularized without the hedge by Coupvray historian Jean Roblin has not been confirmed at the primary level — the pages that would carry it (dsq-sds.org, perkins.org/braille-barbier) were behind bot-check walls on every attempt as of 2026-07.

References

• question-verify-barbier-night-writing-myth-and-transmission-chain — the open verification this entity is central to
• claim-barbier-night-writing-designed-for-blind-not-soldiers
• Captures: 2026-07-09-hop-barbier-night-writing-myth, 2026-07-23-verify-the-barbier-night-writing-myth-correction-against