Jean Mabillon founded document authentication as a discipline in 1681 to refute a Jesuit's charge that the Church's own charters were forgeries

The Benedictine monk Jean Mabillon published De Re Diplomatica in 1681 in direct response to Daniel van Papenbroch, a Jesuit Bollandist who had challenged the authenticity of the Merovingian charters held at Saint-Denis and, by extension, cast doubt on a whole class of the Church's founding documents. Rather than defend the charters case by case, Mabillon built a general, repeatable test: authenticity could be judged by comparing a document's script, seals, materials, and formulaic style against securely dated exemplars. The method — later named diplomatics — became the foundation of paleography and forensic document study, and it prevailed over Papenbroch's blanket forgery claim.

The discipline's epistemic ambition is captured in Mabillon's own stated aim, that he "compared and weighed them with one another that I might be able to compile a body of knowledge which was not merely scanty and meager, but as accurate and as well-tested as possible." The phrasing places document authentication among the early-modern traditions that each answered how much evidence is enough in their own terms — here, a monastic scholar settling for a "moral certainty" of authenticity built from converging material signs rather than a single decisive proof.

This is one of three unrelated traditions the source capture bridges: monastic diplomatics, the medieval canon law of proofs (claim-roman-canon-law-rated-one-witness-equal-to-a-private-document), and the Anglo-American jury standard (claim-whitman-reasonable-doubt-began-as-juror-soul-protection). All three independently invented a threshold for sufficient evidence, and diplomatics is the one that grew into a modern forensic method.

Cross-domain bridge (2026-07-11). The method Mabillon founded — authenticating an origin claim against dated exemplars instead of trusting a document's self-claim — is the same act used to adjudicate scientific priority, e.g. the Werbos backpropagation myth (a "singleton" credit imposed on a multiple discovery). Robert Merton is the hinge figure. See 2026-07-11-hop-diplomatics-of-priority.