Definition
A Latin term from Roman law meaning citizen. Civis denotes a person belonging to a political community by virtue of origin or birth, as distinguished from incola, the resident or inhabitant whose connection to a place arises from domicile rather than nativity. The civis relationship was constitutive: it attached to a person through the circumstance of birth into citizenship, not through subsequent choice of habitation.
In Roman legal usage, the distinction carried practical weight. A civis held the full bundle of civil rights attaching to citizenship — including capacity to own property under Roman law, to sue and be sued in Roman courts, and to participate in civil institutions. The incola, by contrast, held a lesser or derivative connection grounded in where one lived, not who one was by origin.
Common Confusion
Civis and incola are frequently treated as interchangeable in secondary historical sources, but Roman law drew a precise line between them. Civis = status by birth or origin. Incola = connection by domicile. A single person could be both — a civis of one municipality who had taken up domicile in another, thereby becoming incola of the second while remaining civis of the first. Conflating the two distorts analysis of Roman jurisdictional and tax obligations, as well as later common law borrowings around domicile doctrine.
Why It Matters in Research
Civis appears in Law Mind sources primarily as a Roman law term carried forward into legal dictionaries as foundational vocabulary for citizenship and domicile analysis. Researchers will encounter it most often in three contexts:
First, as a definitional anchor in domicile doctrine. Anglo-American courts and treatises developing the law of domicile borrowed the civis/incola distinction from Roman sources. When nineteenth-century treatise writers like Phillimore analyzed domicile, they reached back to this Roman framework to explain why birthplace and residence were legally distinct bases of civic attachment. Understanding civis clarifies why domicile doctrine treats origin and residence as analytically separate questions.
Second, in post-Civil War citizenship litigation. Black's 2nd edition cross-references United States v. Rhodes, 27 Fed. Cas. 788, a Reconstruction-era federal case engaging questions of citizenship status. The Roman civis concept provided backdrop vocabulary for courts working through what citizenship meant under the Fourteenth Amendment and federal civil rights statutes.
Third, as a point of entry into the Roman law materials themselves. Corpus Juris Civilis citations — Code 10.40.7 and Digest 34.5.2 — appear in the historical dictionary entries and are genuine texts. Researchers using Law Mind's Roman law sources should treat these citations as navigable; they are not decorative.
The term itself does not appear as operative language in modern Anglo-American statutes or constitutions, so it functions in modern research as interpretive context rather than as a live legal standard.
Historical Dictionary Support
All three source dictionaries agree on the core definition and the civis/incola distinction. The formulation is nearly identical across Black's 1st, Black's 2nd, and Burrill's, suggesting all three draw from a common predecessor — likely a shared Roman law source or an early English law dictionary tradition.
Burrill's entry adds the most substantive content. It supplies the Digest maxim — Civibus civitatis legatum vel fidei commissum datum, civitati relictum videtur — which translates roughly as: that which is bequeathed or given in trust to the citizens of a state is considered as left to the state itself. This maxim extends the term's significance beyond personal status into property and succession law, establishing that collective citizenship could serve as a legal recipient for testamentary gifts. Neither Black's edition includes this passage, making Burrill's the richer source for this dimension of the term.
Black's 2nd edition is the only source to cross-reference a decided case (U.S. v. Rhodes), signaling that by the second edition the editors saw Roman citizenship vocabulary as having live relevance to post-Reconstruction American law. This is a meaningful editorial choice that the other dictionaries do not replicate.
What the historical dictionaries do not address: they offer no account of how civis traveled from Roman law into common law jurisprudence, nor do they discuss the extent to which the Roman distinction influenced equity or conflict-of-laws doctrine in English courts. Phillimore's Law of Domicil, cited by Burrill at pages 25–26, is the primary bridge text for that analysis and should be consulted directly.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia: Citizenship; Domicile; Roman Law Foundations of Common Law