Definition
A Law French term meaning "within age" — that is, below the legal age of majority or the age at which a person acquires full legal capacity. In medieval English legal usage, a person described as being of *deyns age* was a minor, an infant in the legal sense, and therefore under a legal disability affecting their capacity to act in court, hold certain rights independently, or be held to the full obligations of contract or legal process.
The term functioned as a status descriptor in pleading and procedural contexts, signaling to a court that a party lacked full legal standing by reason of youth.
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Common Language
Modern common usage (Wiktionary): No entry. The phrase has no modern common use; it is obsolete outside historical legal texts.
Historical common usage (Webster's 1913): No entry. The phrase does not appear in Webster's 1913 as a general vocabulary term.
Editorial note: This is pure Law French legal jargon with no surviving common-language counterpart. The underlying concept — being underage — is universally understood, but the phrase itself belongs entirely to the medieval English legal register.
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Why It Matters in Research
Researchers will encounter *deyns age* almost exclusively in Year Books, early plea rolls, and legal dictionaries sourced from those materials. Because it appears in Law French, a researcher working with English-language indexes or modern finding aids may not encounter the term at all — it will surface only in transcriptions or editions of primary medieval sources.
The critical navigational point: *deyns age* is a status term, not a substantive rule. Finding it in a source tells you that minority status was being invoked procedurally, but the legal consequences of that status — guardianship, wardship, postponement of action, protection from binding contract — must be traced through parallel doctrines. The term itself resolves none of those questions.
Burrill's entry is compressed to the point of near-uselessness, offering only a citation to Dyer's Reports (French edition, folio 55) without elaboration. Researchers should treat Burrill's entry as a pointer, not a definition of legal doctrine.
There is also a subtle trapping issue: Burrill's entry runs *deyns age* together with *deyver* and *dez* in tight succession, reflecting the dictionary's alphabetical sweep through Law French vocabulary. A researcher scanning Burrill's in print or in image form may initially misread where one entry ends and the next begins.
For modern research purposes, the substantive doctrines that *deyns age* once labeled — age of majority, minority disability, incapacity of infants in contract and tort — have entirely displaced the Law French terminology. Tracking those doctrines forward requires moving to the English-language vocabulary of infancy, minority, and legal capacity.
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Historical Dictionary Support
Burrill's Law Dictionary provides the sole entry in the Law Mind corpus for this term. Burrill defines it tersely as "within age" and cites Dyer's Reports in the French edition at folio 55. No further elaboration is offered, and no other shelf source in the corpus indexes this phrase independently.
The citation to Dyer is genuine and useful: Sir James Dyer's Reports (published in Law French and later in English) are a well-established primary source for sixteenth-century English common law, and the French edition Burrill references reflects the period when Law French remained the professional language of the English courts. Researchers who wish to verify the usage in context should consult the Dyer citation directly.
No historical dictionary in the corpus disagrees with Burrill's gloss — but that agreement is unremarkable given that Burrill appears to be the only source that indexes the term at all. Older general Law French glossaries (such as Kelham's, which Burrill cites for neighboring entries) do not appear to break out *deyns age* as a discrete entry, suggesting it was treated as a transparent compound rather than a term of art requiring separate definition.
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Jurisdictional Note
As a Law French term, *deyns age* is specific to the English common law tradition and has no direct parallel in civil law or Scots law sources. It has no operative use in any modern jurisdiction. Its relevance is confined to historical English legal materials, primarily pre-seventeenth century.
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Encyclopedia Cross-Reference
The Law Mind Family Law Encyclopedia: Marriage — Capacity to Marry (Age, Consanguinity, Affinity)
The Law Mind Criminal Law Encyclopedia: Infancy — Age of Criminal Responsibility
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