Definition
Heriettum is the Latinized form of heriot — a feudal render or customary payment due to a lord upon the death of a tenant. In its earliest operation, the obligation required the deceased tenant's best beast (or, in some formulations, best chattel) to be surrendered to the manorial lord as a condition incident to the tenure. The render served as an acknowledgment of the lord's superior interest in the land and, in some cases, as a practical return of goods that the lord had notionally furnished to the tenant during his lifetime.
The term appears primarily in medieval legal texts and pleadings where Latin was required or preferred. It is not a distinct legal concept from heriot but rather the Latinized rendering used in formal instruments, court rolls, and scholastic legal writing. Researchers encountering heriettum in a source should treat it as interchangeable with heriot for substantive purposes.
Common Confusion
Heriettum and heriot are the same obligation. Heriettum is not a subspecies, variant form, or technical refinement of heriot — it is simply heriot written in Law Latin. Confusion occasionally arises because medieval and early modern sources will use both forms without explanation, sometimes within the same document. Researchers should also distinguish heriot-service (arising from tenure and enforceable as a matter of right) from heriot-custom (arising from manorial custom and variable in its terms), a distinction that applies equally whether the source uses the English or Latin form.
Why It Matters in Research
The principal research value of this entry is navigational: knowing that heriettum equals heriot prevents a researcher from treating the Latin form as a separate doctrine requiring independent investigation.
This term is encountered almost exclusively in medieval sources — Bracton most prominently, along with manorial court rolls, inquisitions post mortem, and early plea rolls. Bracton's treatment at folios 84 and 86 is the anchor citation in the pre-modern literature, and any researcher working with those passages should expect to find heriettum used without gloss or explanation. The transition from heriettum to heriot in the primary sources tracks the broader shift from Law Latin to Law French and then vernacular English legal writing; by the time of Blackstone and the common law commentators, the English form heriot is standard.
The Law Mind corpus is likely to surface heriettum in transcribed or translated medieval materials and in nineteenth-century legal dictionaries that preserved Latin forms for completeness. In digests and practice works from the Tudor period onward, look instead under heriot. Searching only one form in a corpus spanning medieval through modern sources will produce incomplete results.
One practical trap: manorial documents sometimes use heriottum (double t) as an alternative spelling. The variation is scribal, not substantive, but automated search tools that require exact matches will miss it.
Historical Dictionary Support
Burrill's Law Dictionary provides a minimal but accurate entry: heriettum is glossed simply as "a heriot," with the citation to Bracton. This reflects the standard treatment across historical legal dictionaries, which uniformly treated the Latin form as a transparent substitute for the English term rather than a concept warranting independent analysis. The brevity is appropriate — there is no hidden doctrinal content in the Latinization itself.
What the historical dictionaries do not supply is any analysis of how heriettum functions within Bracton's broader framework of tenure and services. For that substance, researchers must go to the heriot entry and to Bracton's text directly.
Jurisdictional Note
Heriot, in either its Latin or English form, was a feature of English tenure law and has no meaningful parallel in American common law, which did not transplant manorial incidents. References to heriettum in American sources are antiquarian or comparative only.