Definition
A Latin and Law Latin verb appearing in old English legal texts with two distinct operative meanings:
1. To enclose: The act of fencing, hedging, or otherwise converting open fields into closes or enclosures. In this sense, claudere describes the physical and legal act of enclosing land that had previously been held in common or left open — a process central to the enclosure movement in English agrarian law.
2. To close, finish, or end: Used in formal legal and record contexts to denote the conclusion of a period, proceeding, or, most significantly, a life. The phrase diem clausit extremum — "he closed his last day" — derives directly from this meaning and was the operative language in a writ of the same name issued upon the death of a tenant-in-chief of the Crown.
Common Confusion
The two meanings of claudere are functionally unrelated and arise in entirely different legal contexts. A researcher encountering claudere in a medieval land record concerning field systems is dealing with enclosure law; a researcher encountering it in a writ or inquisition context is almost certainly dealing with the death of a Crown tenant and the consequent royal prerogative rights. Conflating these contexts will misdirect research. The shared Latin root — simply "to close" — is the only connection.
Why It Matters in Research
Claudere is not a term of active modern law. It surfaces exclusively in older English legal records, Year Books, early treatises, and historical writs, and a researcher will encounter it in two very different documentary streams.
In land records and enclosure materials, claudere and its derivatives appear in the context of the long English enclosure movement — spanning roughly the thirteenth through the nineteenth centuries — during which open-field and common land was progressively converted to private closes. Identifying claudere in this context situates a document within that agrarian legal history. Related instruments — including private enclosure agreements, parliamentary enclosure acts, and Chancery proceedings — will use derived or translated terminology rather than the Latin verb itself, so claudere signals an early or highly formalized source.
In writ practice, the importance of claudere lies almost entirely in diem clausit extremum. That writ, issued out of Chancery upon the reported death of a tenant holding directly of the Crown, directed an inquisition to determine what lands the deceased held and by what tenure. It was a mechanism for enforcing the Crown's feudal incidents — relief, wardship, marriage, primer seisin. Researchers working with inquisitions post mortem, escheator records, or the Calendar of Inquisitions Post Mortem will encounter this writ repeatedly, and understanding that clausit in that phrase is a form of claudere clarifies the structure and purpose of the document. The writ fell into disuse after the abolition of military tenures by the Tenures Abolition Act 1660, so its appearance in records is a reliable chronological marker.
The practical trap: claudere looks archaic and dismissible, but in writ contexts it signals a document of real genealogical and property-history significance. Skipping past it as mere Latin decoration in a record heading will cause a researcher to miss the procedural significance of what follows.
Historical Dictionary Support
Burrill's Law Dictionary provides a compact but reliable entry, citing Cowell's Interpreter for the enclosure meaning and cross-referencing both Close and Diem clausit extremum. This is adequate for identifying the term; it is not adequate for understanding the legal machinery behind either meaning.
Burrill correctly captures the dual sense — physical enclosure and mortal conclusion — without overstating the relationship between them. The citation to Cowell is appropriate: Cowell's Interpreter (1607) is one of the standard early glossaries of Law Latin and Anglo-Norman legal vocabulary, and his treatment of enclosure-related terminology reflects practice during the active period of the enclosure movement.
What Burrill does not address, and what no single dictionary entry fully conveys, is the administrative weight of diem clausit extremum as a writ form. For that, researchers should consult Fitzherbert's Natura Brevium or Blackstone's Commentaries (Book II, chapter on tenure) for the feudal context, and the published Calendars of Inquisitions Post Mortem for examples of the writ in operation.
Jurisdictional Note
Claudere is a term of English law specifically, reflecting the feudal tenure and open-field systems that developed in England. It has no direct analog in Scots law or in the civil-law jurisdictions of continental Europe, and it did not transplant into American colonial or early republic legal usage in any operative sense.