Definition
De moderata misericordia (Latin: "of moderate mercy") is a common law writ directed to the lord of a court not of record, commanding that lord or his bailiff to impose only a moderate amercement upon a party who had been excessively fined in that court. The writ functioned as a corrective remedy: where a court not of record had amerced a litigant or defendant beyond what was reasonable or proportionate, the aggrieved party could obtain this writ to compel a reduction of the financial penalty to a moderate sum. It was grounded directly in Magna Carta and was accordingly one of the earliest formal legal instruments for controlling the discretionary punishing power of seignorial and other inferior courts.
Common Confusion
De moderata misericordia is sometimes loosely grouped with other writs touching excessive punishment, including writs of error and the later equitable jurisdiction over unconscionable penalties. These are distinct. De moderata misericordia operated within the original court's jurisdiction — it commanded moderation of the amercement, not reversal of the judgment — and it ran against the lord of the court personally, not against a superior tribunal reviewing the inferior court's record. It is also distinct from the writ of ne nimis distringatur, which addressed excessive distraint, and from remedies available when a court of record imposed excessive fines, for which different and more complex procedures applied.
Why It Matters in Research
This is a highly specialized historical writ with no modern procedural equivalent. Researchers encountering it in medieval or early modern legal records need to recognize several navigational points.
First, the writ belongs to the broader cluster of writs governing amercements, a category of financial penalty distinct from fines and forfeitures. Amercements, fines, and forfeitures are frequently conflated in older records and secondary literature; knowing which applied in a given case determines which remedy, if any, was available to the aggrieved party.
Second, the writ is jurisdiction-specific in an important way: it ran only against courts not of record. Courts of record — those whose proceedings were enrolled and which carried authority to impose fines of fixed legal character — were treated differently. Researching the writ requires understanding whether the underlying tribunal was one of record or not, a distinction that itself shifted over time as English court structure evolved.
Third, the Magna Carta grounding is significant for corpus research. Chapter 14 of Magna Carta (in various numbering schemes, sometimes cited as chapter 20 in the 1215 text) contains the foundational prohibition on excessive amercements. Legal sources before and after the 1225 reissue of Magna Carta may cite different chapter numbers for the same provision, creating apparent inconsistencies in historical treatises and year books.
Fourth, the writ appears in the Registers of Original Writs (Registrum Brevium), which is the primary finding tool for writs of this kind. Fitzherbert's Natura Brevium is the main practitioner's guide that describes how and when de moderata misericordia was available. Researchers using either source should note that editions vary in pagination and that Fitzherbert's text was frequently revised and supplemented by later editors, so editorial annotations must be distinguished from Fitzherbert's original treatment.
Historical Dictionary Support
Burrill's Law Dictionary treats de moderata misericordia under the cross-heading Capienda, Breve — meaning "writ for taking a moderate amercement" — rather than under the Latin phrase itself. This is a navigational trap: researchers searching Burrill alphabetically under D may miss the entry entirely. Burrill's treatment is terse but accurate, grounding the writ in Magna Carta chapter 14, identifying its target as courts not of record, and citing both the Registrum Originale (80b) and Fitzherbert's Natura Brevium (75, 76) as primary sources.
Burrill does not discuss the writ's relationship to other amercement-controlling mechanisms, its procedural relationship to the underlying court, or what happened if the lord of the court failed to comply. These gaps are significant. Historical sources more generally treat the writ as a fairly routine feature of the Magna Carta remedial structure without examining how frequently it was actually invoked or how effective it proved in practice.
Jurisdictional Note
De moderata misericordia was an English common law writ with no direct American successor. The procedural infrastructure of seignorial courts not of record did not transplant to the American colonies in any systematic way. American constitutional provisions against excessive fines — including the Eighth Amendment and state equivalents — trace their lineage to the same Magna Carta provisions but operate through entirely different mechanisms.