Definition
In Roman and early civil law, abactores (singular: abactor) refers to cattle thieves — specifically, persons who drove away livestock in herds or groups rather than stealing individual animals. The term denotes a recognized category of thief distinguished by the scale and method of the theft: the driving off of animals en masse, as opposed to the taking of a single beast.
Why It Matters in Research
Abactores is a term of pure historical and comparative legal significance. Researchers will encounter it primarily in texts rooted in Roman law, civil law commentaries, and early English legal treatises that drew on civilian sources. It does not appear as an operative term in modern common law jurisdictions and carries no current statutory meaning in Anglo-American law.
The chief research trap is treating abactores as a synonym for any form of animal theft. The Roman distinction mattered for sentencing and classification: abigei (the more commonly used term in later sources) and abactores were treated more harshly than ordinary thieves precisely because large-scale livestock theft threatened agricultural communities at a systemic level. Conflating this term with simple theft of a single animal misrepresents the Roman legal category.
Researchers working in comparative law, legal history, or the reception of Roman law into early modern European legal systems should note that the term surfaces in civilian dictionaries and digest commentaries, not in common law pleading records. If tracing the concept through English legal history, look instead to statutes and cases dealing with cattle-stealing and larceny of livestock, where the civilian pedigree is rarely acknowledged but the underlying policy concern — mass taking of stock — sometimes persists.
Historical Dictionary Support
Burrill's Law Dictionary provides the core entry, defining abactores simply as "cattle stealers" and citing Paulus Sententiæ and Brissonius's lexicon as authorities, alongside a reference to Calvinus's Lexicon under the heading Abigei. This entry is brief and functional, doing little more than pointing researchers to the Roman sources. Burrill cross-references abactor (singular) and equates abactores with abigei, treating the terms as effectively synonymous — a reasonable equivalence, though some Roman jurists used the forms with slightly different emphasis.
What historical dictionaries do not address is any reception of the term into English common law. The silence is meaningful: abactores remained a civilian term of art and did not migrate into common law pleading or statutory drafting. Historical dictionaries in the civilian tradition (Calvinus, Brissonius) give the term fuller treatment as a category within Roman criminal law, where it carried specific procedural and penal consequences under the Digest.
Jurisdictional Note
Abactores has no current operative meaning in any common law jurisdiction. It is encountered exclusively in Roman law sources, civil law treatises, and historical legal dictionaries. Researchers in civil law jurisdictions working with early modern sources may find the term in annotated editions of the Corpus Juris Civilis or continental commentaries.