Definition
In Roman law, giariis (also encountered as *giarius*) refers to a person who imprisons or forcibly detains a free person as a slave, knowing that individual to be free. The term arises directly from the *Lex Fabia* (sometimes rendered *Lex Favia*), a Roman statute of republican vintage that addressed the crime of kidnapping free persons and holding them in unlawful servitude. A giariis was the specific offender contemplated by that law — one who, with knowledge of the victim's free status, treated them as a slave.
The offense covered not only outright seizure but also the continued detention of a known free person under conditions of bondage. The *Lex Fabia* predated Cicero, placing it firmly in the late Roman Republic, and originally imposed only a pecuniary (monetary) penalty rather than criminal punishment in the modern sense. As Roman law developed and the kidnapping of free persons came to be treated as a serious crime attracting more severe sanctions, the original statute fell into disuse, superseded by harsher provisions.
Why It Matters in Research
This term will appear almost exclusively in scholarship concerning Roman law, not in common law sources or modern legal materials. Researchers encountering *giariis* in a historical legal text should treat it as a Roman law term of art tied specifically to the *Lex Fabia* and its enforcement context.
Several traps exist for the unwary:
First, the *Lex Fabia* is sometimes confused with other Roman statutes bearing similar names. Verify which *lex* is under discussion; Roman legal scholarship references multiple laws attributed to the Fabian gens.
Second, Bouvier's entry cites the Digest (D. 48, 15, 7) and the Codex (C. 9, 20, 7) — these are genuine Justinianic sources and the appropriate starting points for deeper research into the offense in classical Roman law. A researcher working from Bouvier alone will get the outline but should consult those primary texts for the full doctrinal picture.
Third, the evolution from pecuniary penalty to criminal treatment is significant for periodization. If your research concerns the early Republic, the *Lex Fabia* in its original form is operative. If the period is late classical or Justinianic, the more severe criminal framework applies and the statute's direct force had largely been displaced.
Fourth, the term does not appear in standard English common law dictionaries and has no meaningful presence in Anglo-American legal materials. Its appearance in Bouvier's reflects that work's substantial treatment of Roman and civil law antecedents.
Historical Dictionary Support
Bouvier's Law Dictionary is the sole English-language legal dictionary source for this term, and its entry is brief but accurate in its essentials. Bouvier correctly identifies the *Lex Fabia* as pre-Ciceronian, correctly characterizes the original penalty as pecuniary, and correctly notes the statute's decline once kidnapping became a fully criminalized offense. The citation to Hunter's *Roman Law* (at page 147) and to the Digest and Codex passages is consistent with standard Roman law scholarship.
What Bouvier's entry does not address is the broader legal context: the *Lex Fabia* operated in a Roman legal world where the distinction between free and slave status was foundational to the entire legal order, and the offense of the *giariis* was a direct assault on that status. The harm was not merely to the individual victim but to the integrity of the free/slave boundary on which Roman social and legal organization depended. Later Roman jurisprudence extended protections and sharpened penalties in ways that the original statute did not contemplate.
No entry for *giariis* appears in Black's Law Dictionary or other standard English legal dictionaries reviewed for this corpus, making Bouvier's the primary reference for common law–trained researchers.
Jurisdictional Note
This term belongs entirely to Roman law and has no direct analog in common law jurisdictions. Researchers working in civil law systems derived from Roman law may encounter doctrinal descendants of the *Lex Fabia* in the treatment of unlawful detention and human trafficking, but the specific term *giariis* is not in operative use in any modern legal system.
Encyclopedia Cross-Reference
Law Mind Encyclopedia — Roman Law
Law Mind Encyclopedia — Slavery and Servitude in Ancient Law
Law Mind Encyclopedia — Lex Fabia (if entry exists)