Definition
Bancus regis (Law Latin: "the king's bench") is the historical Latin designation for the Court of King's Bench, the superior common law court of England that was, in legal theory, always held in the personal presence of the sovereign. The court occupied the highest position in the ordinary English judicial hierarchy, ranking below only Parliament. When the reigning monarch was a queen, the court was correspondingly styled bancus reginae (the queen's bench).
The fiction underlying the term was that the king himself sat as judge — coram ipso rege, "before the king himself" — even when, as became standard practice, professional judges presided in his place. This royal presence theory had practical consequences: because the king was theoretically always present, the court could exercise jurisdiction anywhere in the realm and could correct errors of inferior courts, a power that distinguished it from the Court of Common Pleas, which was fixed at Westminster.
Why It Matters in Research
Researchers encounter bancus regis primarily in pre-modern English legal sources, including plea rolls, writs, and treatises from the medieval and early modern periods. The term is purely historical; it has no operative legal force in any modern jurisdiction. Its research value is navigational: recognizing the term allows a researcher to correctly identify King's Bench materials in archival and digitized sources that use Latin headings or abbreviations.
Two practical traps arise in historical corpus research. First, the alternation between bancus regis and bancus reginae follows the sex of the reigning monarch, not a change in the court's structure or jurisdiction. A researcher moving between sources from, say, the reign of Henry VIII and Mary I must account for this shift in terminology while understanding that the same institutional body is being referenced. Second, the phrase in banco regis (or in banco reginae) appears as a standard formula in writs and procedural records to indicate that a matter was before King's Bench specifically, as opposed to Common Pleas or Exchequer. Missing this distinction can cause a researcher to misread the procedural posture of a historical case.
The term also surfaces in Blackstone and Fleta, two sources that appear frequently in Law Mind's historical treatise holdings. Blackstone's reference (3 Bl. Comm. 41) places bancus regis in the context of explaining the King's Bench's supervisory authority, which is useful for researchers tracing the origins of certiorari and related supervisory writs.
Historical Dictionary Support
Black's Law Dictionary offers a compressed but accurate entry, citing Blackstone's Commentaries and correctly identifying the King's Bench as "the supreme tribunal of the king after parliament." Burrill's Law Dictionary is the more useful source here. Burrill supplies the critical explanatory phrase — coram ipso rege — that explains why the court bore its name and had its distinctive jurisdictional character. Burrill also cites Fleta (lib. 2, c. 51, § 21), a thirteenth-century treatise compiled during the reign of Edward I, which is one of the earliest formal expositions of the court's structure. Burrill additionally flags the companion term bancus reginae, a connection Black's omits.
Neither source addresses the court's eventual abolition and reconstitution under the Judicature Acts of 1873–1875, which merged King's Bench into the new Supreme Court of Judicature. For research that extends into the Victorian period, this institutional transformation is essential context that the historical dictionaries do not provide.
Jurisdictional Note
Bancus regis is a term of English legal history with no direct American counterpart. Colonial American courts sometimes borrowed English nomenclature, and references to "king's bench" appear in pre-Revolutionary sources, but the term had no constitutional continuity after independence. Researchers in early American legal history may encounter the phrase in materials predating 1776.