Definition
In old English law, gestus means behavior or conduct — the outward deportment or bearing of a person, particularly as it bore on that person's standing in the community. The term appears most often not in isolation but as part of the compound phrase *de gestu et fama* (concerning behavior and reputation), which was the name of a formal proceeding or inquiry into a person's character and social standing.
Common Confusion
*Gestus* should not be confused with *res gestae*, a wholly separate Latin legal concept. *Res gestae* (the things done) refers to the acts and circumstances forming part of a transaction, and became an important common law evidentiary concept governing the admissibility of spontaneous statements and surrounding circumstances. Despite sharing the same Latin root (*gerere*), the two terms belong to entirely different legal contexts: *gestus* is a character and conduct concept from old English local and ecclesiastical practice; *res gestae* is an evidentiary doctrine that survived into modern law. Encountering one in a source tells you nothing about the likely presence of the other.
Why It Matters in Research
Researchers will almost never encounter *gestus* standing alone in primary sources. Its practical significance in the historical corpus lies almost entirely in its role within *de gestu et fama* proceedings, which were a recognized mechanism in English ecclesiastical and local courts for inquiring into a person's moral character and community reputation. If you are researching compurgation, canonical purgation, or medieval English character proceedings, *gestus* is the behavioral half of the formula — *fama* being the reputational half. Treat the two as a unit.
The term has no living procedural significance in modern law. Its appearance in a source signals that the document is dealing with pre-modern English legal machinery — most likely ecclesiastical court records, borough court rolls, or early common law treatises touching on character and standing. Any modern treatise that uses the word is almost certainly quoting or translating an older source.
No danger of false positives from modern usage: the term does not appear in contemporary legal writing except in historical context.
Historical Dictionary Support
Burrill's Law Dictionary provides the core entry: *gestus* as "behaviour; conduct," derived from *gerere* (to conduct) and its Law French cognate *gest* or *gette*. Burrill correctly treats the word as principally significant through its compound form *de gestu et fama*, directing the reader there for substantive content. The entry is economical to the point of brevity, which is appropriate — *gestus* in isolation carries little legal weight. What Burrill does not elaborate is the procedural context in which the phrase *de gestu et fama* operated, nor the distinction between *gestus* (conduct, something observed and testifiable) and *fama* (reputation, something derived from community opinion). That distinction mattered in practice: a witness might speak to *gestus* from direct observation while *fama* was established through neighborhood report.
Historical dictionaries generally treat this term as a pass-through, deferring to the compound phrase. Researchers should follow that lead.