Definition
*Debet quis juri subjacere ubi delinquit.* "Every person ought to be subject to the law of the place where he offends." A maxim of legal principle, drawn from Bracton, establishing that a wrongdoer is answerable under the law of the jurisdiction in which the wrongful act occurs. The maxim asserts a foundational premise of territorial jurisdiction: legal obligation and accountability attach at the place of the offense, not merely at the actor's place of origin or domicile.
The full Latin form translates literally as: "One ought to be subject to the law where he offends." The abbreviated form *debet quis juri subjacere* refers to this principle and is sometimes invoked as shorthand for the broader maxim.
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Common Confusion
This maxim is occasionally treated as a statement of conflict-of-laws doctrine (choice of law) rather than what it more precisely expresses: a principle of territorial jurisdiction and accountability. The two concepts are related but distinct. Territorial jurisdiction asks *which court may hear the matter*; choice of law asks *which jurisdiction's substantive rules govern*. The maxim speaks primarily to the former — the offender is answerable *where* the act occurred — though historical writers have invoked it in support of both propositions. Researchers should not assume that a citation to this maxim in an older treatise settles a choice-of-law question.
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Why It Matters in Research
This is a maxim entry, not a doctrinal term with an independent legislative or case-law history. Its research significance lies in where it appears and what it supports, rather than in any independent body of law built around it.
**Tracing the source.** Black's identifies the maxim as originating in Bracton (fol. 154b) and confirmed at 3 Coke's Institutes 34. Both are primary sources worth consulting in original when the maxim is cited. Researchers should be aware that the folio reference in Black's 2nd edition (fol. 1540) appears to be a printing artifact; the standard Bracton citation is fol. 154b. Verify against the Bracton text directly rather than relying on the printed folio number in Black's.
**Jurisdictional and conflict-of-laws arguments.** In older English and American cases, this maxim was deployed to support the principle that a defendant could not escape legal consequence by claiming that the law of his home jurisdiction did not recognize the wrong. It reinforced *lex loci delicti* (the law of the place of the wrong) as the governing principle — a rule that dominated American conflict-of-laws analysis through much of the nineteenth and early twentieth centuries before giving way to more flexible approaches under the Restatement (Second) of Conflict of Laws.
**Corpus navigation.** Because this maxim appears in treatise and case contexts rather than statutes, researchers will find it in pleading arguments, judicial opinions discussing jurisdictional reach, and scholarly writing on conflict of laws. It is most likely to surface in pre-twentieth-century American and English legal writing. When encountered in a citation string, the surrounding context — particularly whether the argument is jurisdictional or choice-of-law — determines how much weight the maxim is bearing.
**Historical density.** The maxim carries the authority of Bracton and Coke behind it, which gave it considerable rhetorical force in common law jurisdictions. Lawyers citing it in argument were invoking a pedigree stretching to the foundational period of English common law. Modern courts rarely cite the maxim directly; its substance survives in doctrines of territorial jurisdiction and, where still applied, *lex loci delicti*.
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Historical Dictionary Support
Black's Law Dictionary (2nd Ed.) provides the maxim and its translation alongside the Bracton and Coke citations, situating it within a cluster of related Latin maxims in the *debet* family. The entry is brief and functional, as is typical of maxim entries in that edition — it supplies the authority chain but no doctrinal elaboration.
The attribution to Bracton is significant. Henry de Bracton's *De Legibus et Consuetudinibus Angliae* (c. 13th century) is one of the earliest systematic treatments of English law, and maxims drawn from it carry foundational status in common law jurisprudence. Coke's repetition and endorsement of the maxim in the *Institutes* extended its authoritative reach into the seventeenth century and beyond.
Historical dictionaries do not address the maxim's later life in conflict-of-laws doctrine, which developed substantially after the classical period of maxim citation. Researchers relying solely on dictionary sources will miss the doctrinal trajectory.
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Jurisdictional Note
The maxim is a common law inheritance shared by English and American legal traditions. Its direct application in modern American courts has largely been absorbed into statutory and doctrinal frameworks governing personal jurisdiction and choice of law. Civil law jurisdictions share the underlying territorial principle but would not cite this maxim as authority.
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