Definition
A petit assize was a medieval English jury procedure used to resolve disputes over possession of land, as distinguished from disputes over ownership or ultimate title. Where a party claimed to have been wrongfully dispossessed of a freehold estate, the petit assize provided a relatively swift jury-based remedy focused on the narrow factual question of who held possession, not who held the better right in law.
The term is historical and belongs to the procedural vocabulary of early English common law. It has no operative meaning in modern practice.
Common Confusion
PETIT ASSIZE vs. GRAND ASSIZE: The two terms are easily conflated because both are forms of jury trial in medieval English land law, and both appear in the same early sources. The distinction is fundamental. The petit assize addressed possession — a preliminary, practical question — while the grand assize addressed property, meaning ultimate title and right. A litigant could win a petit assize and recover possession without that result settling the deeper question of who owned the land in fee. The grand assize, introduced under Henry II, allowed a defendant in a writ of right to choose jury trial over trial by battle on the question of title itself. The two proceedings could thus be sequential: possession first, property right second.
PETIT ASSIZE vs. PETIT JURY: The similarity in name creates surface confusion. The modern petit jury (the trial jury of twelve that returns a verdict) takes its name from the same root — "petit" meaning small or lesser — but is an entirely different institution. The petit assize was a specific medieval procedure tied to land disputes; the petit jury is the general trial jury that survives in modern civil and criminal practice. Researchers encountering "petit assize" in historical sources should not read backward from modern jury practice.
Recognized Forms
/SUBTYPES
The petit assize historically encompassed several named writs and their associated jury inquiries, each addressing a specific possessory question:
Assize of Novel Disseisin: The most important. Addressed recent wrongful dispossession of a freehold. The jury determined whether the plaintiff had been disseised (dispossessed) unjustly and without judgment.
Assize of Mort d'Ancestor: Addressed whether the plaintiff's ancestor died seised of a freehold and whether the plaintiff was the rightful heir entitled to possession.
Assize of Darrein Presentment: A narrower procedure addressing possession of an advowson — the right to present a clergyman to a benefice — rather than land itself.
Assize of Utrum: Determined whether land was held in frankalmoin (free alms, i.e., ecclesiastical tenure) or by lay fee, affecting which court had jurisdiction.
Why It Matters in Research
Researchers working in early English legal history, ecclesiastical records, or the history of civil procedure will encounter petit assize frequently in primary and secondary sources from the twelfth through fifteenth centuries. Several navigational points matter:
The term appears without definition in many historical sources because medieval writers assumed familiarity. Glanvill (c. 1187-1189) and Britton (c. 1290), both cited by Bouvier, are the foundational treatises. Researchers using Bouvier as a starting point should go directly to those sources for procedural detail; Bouvier's entry is a signpost, not a synthesis.
The distinction between possession and property was not merely technical — it was the organizing principle of early English land law and shaped the entire structure of real actions. Understanding petit assize is prerequisite to understanding why the common law developed separate streams of possessory and proprietary remedies, and why that separation persisted into the forms of action abolished in England by the Common Law Procedure Act 1852.
The petit assize procedures, especially novel disseisin, are frequently discussed in legal history scholarship on the Angevin reforms under Henry II. Researchers tracing the development of jury trial as an institution should note that the assize juries were not identical to the later trial jury — they functioned more as informed local witnesses than as neutral fact-finders in the modern sense.
American legal historians will find petit assize relevant primarily as background to the development of ejectment and possessory actions in colonial and early republic practice. The forms of action that descended from the petit assize were gradually supplanted, first by the action of ejectment and later by simplified civil procedure.
Historical Dictionary Support
Bouvier's entry is terse: "A jury to decide on questions of possession... used in contradistinction to the grand assize, which was a jury to decide on questions of property." This captures the essential distinction accurately but provides no procedural texture. Bouvier points researchers to Glanvill Book 2 and Britton Chapter 42, which remain the primary sources.
The entry reflects standard nineteenth-century understanding of the term as purely historical. By Bouvier's time, the petit assize had been obsolete in practice for centuries; his definition functions as a gloss for readers encountering the term in older authorities rather than as a guide to live procedure.
No significant divergence exists among standard historical dictionaries on this term. The core possession/property distinction is universally recognized. What the historical dictionaries uniformly omit is the internal variety of the petit assize — the distinct writs (novel disseisin, mort d'ancestor, darrein presentment, utrum) that the general label encompasses.
Jurisdictional Note
Petit assize is a creature of English common law with no direct American successor. American jurisdictions received the common law forms of action selectively and in modified form; the specific assize procedures did not transplant intact. Researchers should not expect American colonial records to use the term with precision, and should treat any American reference to "petit assize" as likely borrowed from English authority rather than describing local practice.