Definition
A charta chyrographata (also rendered charta chirographata) is a medieval form of written instrument executed in duplicate on a single sheet of parchment. The two copies of the document were written out on the same surface, one above the other or side by side, with the word CHYROGRAPHUM (or CHIROGRAPHUM) inscribed between them. The sheet was then cut through that intervening word, each party retaining one half. Authenticity was verified by reuniting the two halves: if the severed letters aligned precisely, the documents were genuine counterparts. In modern terminology, the charta chyrographata is the historical precursor of the indenture.
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Common Confusion
CHARTA CHYROGRAPHATA vs. INDENTURE vs. DEED POLL: These three instruments represent a spectrum of the same documentary tradition. A deed poll was a single-party instrument executed on a plain-cut sheet. An indenture took its name from the indented or serrated cut used to separate counterparts — a refinement of the earlier chyrograph technique. The charta chyrographata is the earlier form, distinguished by the method of authentication: the cut word itself, rather than a jagged edge, served as the verification mechanism. Researchers encountering any of these terms in medieval or early modern sources should not treat them as interchangeable; the specific form used can carry evidentiary significance in historical legal analysis.
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Why It Matters in Research
This term appears almost exclusively in sources dealing with medieval English and continental European documentary practice, roughly from the eleventh through the fifteenth centuries. Researchers will encounter it most often in records relating to land conveyances, feudal grants, financial obligations, and ecclesiastical agreements.
Several research traps are worth flagging:
Spelling variation is severe. Historical sources render the term as charta chirographata, carta cyrographata, cyrograph, chirograph, and numerous other phonetic approximations. Latin orthographic inconsistency in manuscript sources means keyword searches will miss a significant portion of relevant documents unless variant spellings are built into the search strategy.
The term functions as both a noun (the document itself) and a descriptor (the method of authentication). Early legal dictionaries, including Bouvier, use it in the nominal sense, but manuscript sources may deploy it adjectivally.
The cut-word authentication method has direct evidentiary relevance. In disputes over the genuineness of medieval instruments, the physical condition of the chyrograph line was probative. Researchers working with diplomatic records or forgery controversies in medieval law will find this detail material, not merely ceremonial.
Corpus connections: the charta chyrographata sits at the origin point of the indenture as a legal form. The Law Mind corpus entries on INDENTURE and DEED are downstream from this term. Understanding the chyrograph tradition clarifies why indentures were physically cut rather than merely signed — a question that puzzles researchers approaching early modern conveyancing without medieval context.
The term does not survive into modern practice as a live instrument. Its research value is entirely historical and paleographic.
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Historical Dictionary Support
Bouvier's is the primary shelf source for this term, and its entry is terse: the charta chyrographata is identified as an indenture, with the mechanism explained — both parts written on one sheet, the word chyrograph inscribed between them, the sheet then separated so as to divide that word. This is accurate as far as it goes but compresses a complex diplomatic practice into a single sentence.
What Bouvier omits is worth noting. First, the practice predates the specifically indented cut that gave the English indenture its name; the chyrograph method relies on textual verification, not edge-matching. Second, the continental usage of chirographum in ecclesiastical and notarial practice was somewhat distinct from the English common law form, and Bouvier does not distinguish them. Third, the term appears in Bracton and in the Year Books, where its evidentiary status in property disputes is discussed — context Bouvier's compressed treatment does not supply.
No other shelf sources in the current corpus carry an independent entry for this term. Researchers requiring deeper treatment should consult diplomatic and paleographic scholarship rather than legal dictionaries alone.
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Jurisdictional Note
The charta chyrographata as a distinct instrument is a feature of medieval English and continental European legal practice. It has no operative presence in any modern jurisdiction. Jurisdictional variation in historical usage — between English common law courts, ecclesiastical courts, and continental notarial systems — is significant for scholars of medieval legal history but does not affect modern legal research.
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