Definition
A term from old English law denoting a forger or counterfeiter — specifically, one who fabricates false documents or makes spurious coin. The term appears in medieval legal records and treatises to describe those who committed what would today be classified as forgery or currency counterfeiting, both of which were treated as serious offenses against the crown.
Why It Matters in Research
FALSONARIUS is an archaic Latin term of art encountered almost exclusively in pre-modern English legal sources, Bracton-era treatises, and records from ecclesiastical or royal courts. Researchers working in medieval and early modern English legal history will find the term in its original Latin context; it does not appear in modern statutory or case law. The primary research trap is conflation with related but distinct Latin terms: FALSARIUS (one who falsifies generally) and terms associated with FALSUM (the broader concept of fraud or falsification). When reading Bracton or similar sources, note that falsonarius was used with particular force in the coinage context — counterfeiting the king's money was treated as a species of treason, not merely a property offense, which affects how surrounding procedural and penalty provisions should be read. The term does not carry forward into equity or common law pleading under its Latin form; modern sources will use forgery or counterfeiting instead.
Historical Dictionary Support
The four source dictionaries are in full agreement on the core meaning: a forger or counterfeiter. Burrill's is the most informative, situating the term explicitly within old English law and citing Bracton, folio 117, for the plural form falsonarii in connection with counterfeiters of money. This Bracton reference is the most substantive primary anchor for the term and gives it a mid-thirteenth century pedigree. Black's (both editions) and Bouvier offer stripped-down definitions that confirm the meaning but add little context. None of the source dictionaries address the criminal consequences attached to the status — the distinction between counterfeiting coin (potentially treasonous) and document forgery (a distinct felony) is not explored, a gap researchers should account for when reading original sources. Hovenden's work, cited as "Hov. 424" in Black's, is the secondary authority referenced, though Bracton remains the more commonly available primary source.
Jurisdictional Note
The term is specific to the historical English legal tradition and has no modern jurisdictional application. Researchers working in Scottish, continental, or ecclesiastical law of the same period should look for parallel Latin terminology that may carry different doctrinal weight.