Definition
De bono fossato is a Latin phrase from medieval English law meaning, literally, "of the good ditch" or "concerning the proper maintenance of the ditch." It refers to a duty — typically imposed on landholders or tenants — to maintain boundary ditches, drainage ditches, or defensive earthworks in good repair. The obligation arose in the context of agrarian land tenure and manorial administration, where the condition of ditches was a matter of practical necessity for drainage, boundary demarcation, and the integrity of cultivated fields.
The term appears in the older English legal literature in connection with the duties owed by those holding land under certain tenures, and with the presentment or complaint that could be brought when such maintenance was neglected. Failure to keep a ditch "in good" condition — de bono fossato — could give rise to a manorial or local court proceeding against the delinquent tenant or landholder.
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Common Language
Modern common usage (Wiktionary): No entry. The constituent Latin words are recognizable — de (of/from), bono (good), fossato (ditch, from fossatum) — but the compound phrase has no ordinary English circulation.
Historical common usage (Webster's 1913): Not listed. The individual word "foss" or "fosse" appears in English as a noun for a ditch or moat, particularly in military or fortification contexts.
The gap between any intuitive reading of this phrase and its legal function is narrow but worth noting: a reader encountering de bono fossato in a medieval writ or plea roll might assume it refers to a physical description of land rather than a legal obligation. It is a duty-of-maintenance term, not a descriptive one.
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Why It Matters in Research
This term is a marker term — its appearance in a primary source almost always signals a manorial or agrarian land-tenure dispute, not a modern property action. Researchers working in Anglo-Norman and early English legal records should treat it as a cue to consult parallel sources on manorial court procedure, including court rolls, extents, and surveys from the twelfth through fifteenth centuries.
The Bracton citation given by Burrill (fol. 293b) is the primary anchor. Bracton's De Legibus et Consuetudinibus Angliae is the foundational treatise for understanding this class of obligation, and folio 293b addresses duties of tenants in the context of landholding and agrarian custom. Researchers should consult the Bracton text directly rather than relying on Burrill's gloss, which is spare to the point of near-silence.
A key trap: later English dictionaries and digests largely ignore this phrase, which means its absence from nineteenth- and twentieth-century legal reference works does not indicate that the concept was rare or unimportant — only that it had become obsolete by the time those works were compiled. Researchers using keyword searches in corpus databases should note that fossato and related spellings (fossatum, fossat') appear in variant forms across Latin manuscript sources.
The connection to frankpledge and to the system of presentment in manorial and hundred courts is worth pursuing. Neglect of ditch maintenance was the kind of local nuisance that village or manorial courts were equipped to address, and de bono fossato obligations may appear in presentment records alongside other agrarian duties such as hedge maintenance and road repair.
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Historical Dictionary Support
Burrill's Law Dictionary provides only the barest entry: a cross-reference to Bracton, folio 293b, under the variant "Goodrick, or Goodrich." This alternate form — goodrich or goodrick — appears to be an anglicized or vernacular corruption of the Latin phrase, used in local practice to describe the same obligation in English-language manorial records. The existence of this anglicized form is itself historically significant: it suggests the concept had enough practical currency to acquire a working English name in manorial administration.
No other standard historical law dictionaries in common circulation — not Cowell's Interpreter, not Jacob's Law Dictionary, not Black's early editions — appear to carry a substantive entry for this term. This is consistent with its character as a highly specialized term of medieval agrarian law that had fallen out of active use well before the period when most legal dictionaries were compiled.
Researchers should not interpret the thinness of dictionary coverage as evidence that the underlying obligation was obscure. Manorial records and Bracton suggest otherwise.
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Jurisdictional Note
This term belongs exclusively to the historical English legal tradition. It has no recognized equivalent in American law and does not appear in any modern common law jurisdiction as an operative legal concept. Its relevance is confined to English medieval and early modern legal history.
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Encyclopedia Cross-Reference
See Law Mind Encyclopedia — Frankpledge; Anglo-Saxon Legal Institutions; Manorial Courts
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