Definition
Mannopus is an obsolete term of old English law referring to goods found in the hands of a thief at the moment of apprehension. The word describes stolen property caught, so to speak, in the act — physically held by or on the person of the thief when seized. It is functionally synonymous with mainour (also spelled manour or mainour), the more commonly encountered term for this concept in legal historical sources.
The significance of being taken with mannopus — or taken with the mainour — was procedural and evidentiary: a thief caught red-handed with the stolen goods occupied a more immediate legal jeopardy than one accused without physical proof. In early English legal practice, capture with the stolen item in hand could accelerate or simplify the legal proceedings against the accused, bypassing certain procedural protections otherwise available.
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Common Confusion
Mannopus and mainour are not different legal concepts — they are variant renderings of the same idea, with mainour being the dominant form in historical legal literature and case records. Researchers encountering mannopus in a document should treat it as a direct pointer to the mainour doctrine. Black's Law Dictionary (both first and second editions) cross-references the terms explicitly. Rapalje & Lawrence similarly directs the reader from mannopus to the related entry. Confusion arises primarily from the Latin-inflected spelling of mannopus appearing in older manuscript sources alongside the Norman French mainour, leading researchers to treat them as distinct when they are not.
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Why It Matters in Research
Mannopus is a trap term for corpus researchers. It appears rarely and inconsistently in historical legal sources — mostly in legal dictionaries and glossaries rather than in court records or statutes — and its orthographic variation (mannopus, manopus, manus) makes full-text search unreliable without also searching mainour and its variants.
The substantive doctrine is found under mainour, not mannopus. A researcher encountering mannopus in a primary source — most likely a Latin-language court record, legal treatise, or early English statute — should immediately cross to mainour entries to understand the procedural and evidentiary consequences. Searches limited to mannopus alone will return an incomplete and misleading picture of how the concept operated.
The term belongs to the cluster of early English criminal procedure concepts — including hue and cry, infangthief, and frankpledge — that governed the summary or expedited treatment of thieves caught in flagrante. These concepts functioned together in a pre-modern system of local criminal enforcement, and understanding mannopus requires locating it within that system rather than treating it as a freestanding rule.
Cowell's Interpreter, cited by Rapalje & Lawrence as an authority, is a genuine seventeenth-century legal glossary and a reliable primary source for tracing this term's usage. Researchers working on early modern English legal vocabulary will find Cowell useful for confirming period-appropriate definitions.
Black's first edition contains a minor error or artifact — the entry reads "apprehended burglary, etc., any species of dwelling-house" before correcting to "apprehended thief," suggesting a typographical intrusion from an adjacent entry in the original composition. The second edition corrects this. Researchers citing the first edition's mannopus entry should note the textual corruption.
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Historical Dictionary Support
All three source dictionaries agree on the core definition: goods found in the hands of an apprehended thief. The entries are brief across the board, reflecting the term's status as a minor variant rather than a doctrinally significant independent concept.
Black's first edition is the least reliable of the three for this entry due to the apparent typographic corruption noted above. Black's second edition offers the cleanest statement of the definition. Rapalje & Lawrence adds the citation to Cowell and the cross-reference to manu (likely manu capta or a related Latin formulation), which is useful for researchers tracing the term's Latin-language lineage.
None of the historical dictionaries provides substantive analysis of the procedural consequences of being taken with mannopus. For that, the researcher must go to mainour entries and to broader treatments of early English criminal procedure in sources such as Bracton, Britton, or Pollock and Maitland's History of English Law.
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Encyclopedia Cross-Reference
See Law Mind Encyclopedia: Mainour; Infangthief; Early English Criminal Procedure.
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