Nouveau traité de diplomatique

work by Tassin and Toustain

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July 1, 2026

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The Nouveau traité de diplomatique is a six-volume work by René-Prosper Tassin and Charles-François Toustain, published between 1750 and 1765. This treatise is a significant contribution to the field of diplomatics, which is the study of documents. The work expanded upon the foundational principles established by Jean Mabillon in his De Re Diplomatica, offering a more extensive collection of material. Diplomatics involves the detailed examination of both external and internal features of documents to distinguish between genuine and forged ones. This science is crucial for historical research, particularly concerning medieval Western documents.12

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diplomatics
Post-Renaissance scholarship
…Charles-François Toustain published their six-volume Nouveau traité de diplomatique (1750–65; “New Treatise on Diplomatic”), a work that surpassed Mabillon’s only in its greater wealth of material. Another important event in the history of the science of diplomatics was the founding of the École des Chartes (an institute for the training…
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…Charles-François Toustain published their six-volume Nouveau traité de diplomatique (1750–65; “New Treatise on Diplomatic”), a work that surpassed Mabillon’s only in its greater wealth of material. Another important event in the history of the science of diplomatics was the founding of the École des Chartes (an institute for the training…
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