Definition
A Latin-French legal term from Saxon and early medieval English law meaning to clear oneself of an accusation according to law. To allegiare was to exculpate oneself through a formal oath-based procedure — specifically, to wage one's law (legem vadiare), the process by which a defendant swore to the truth of a denial and produced oath-helpers (compurgators) to support that oath. The term captures both the act of self-defense in a legal proceeding and the formal mechanism by which that defense was accomplished under early English procedure.
Common Confusion
ALLEGIARE is easily confused with "allege" in its modern English sense. The two words share a root but have diverged completely. Modern "allege" means to assert a fact without proof — the opposite of what allegiare accomplished. Allegiare was a completed act of legal purgation, not a preliminary assertion. A researcher encountering allegiare in a Latin legal text should resist translating it as "to allege" in any modern sense.
Why It Matters in Research
This term will appear almost exclusively in pre-Norman and early common law sources — Anglo-Saxon legal texts, Year Books, and glossaries of medieval procedure. It is a terminus technicus of the wager of law system, which was abolished in England by statute in 1833. Researchers working in medieval English legal history, comparative law of proof, or the history of oath-based adjudication will encounter allegiare as a marker for that specific procedural context.
The primary trap for researchers is anachronistic reading. Because allegiare resembles "allege," a reader skimming a Latin text may misread the procedural significance of the term entirely, importing a modern pleading concept into a context where oath-purgation is what is actually described.
Burrill's entry is the most instructive for corpus navigation: it ties allegiare explicitly to the phrase juxta normam legis se excusare (to excuse oneself according to the norm of law) and to sacramento interposito se culpa eximere (to free oneself from fault by interposing an oath). These phrasings help locate cognate passages in other Latin legal sources where allegiare itself does not appear but the same procedure is described.
The term also signals a connection to Spelman's Glossarium, which Burrill cites — a key primary source for researchers tracing Anglo-Saxon and Norman legal vocabulary. If a corpus includes Spelman, allegiare is one of the anchor terms for cross-referencing.
Jurisdictional scope is narrow: this term is specific to English legal history. It has no meaningful parallel usage in civilian or canon law traditions under this name, though analogous oath-purgation procedures existed in both.
Historical Dictionary Support
All four source dictionaries are in substantial agreement on the core meaning: to defend and clear oneself, to wage one's own law. The definitions are brief across the board, reflecting the term's status as historical vocabulary with no living procedural application by the time these dictionaries were compiled.
Burrill provides the most developed entry, expanding the Latin glosses and citing Spelman as authority — giving researchers a direct line to the primary scholarly source. Rapalje & Lawrence add a citation to 6 Mod. 232 in connection with "alleged" in the context of arbitration awards, though this appears as a separate entry appended to the allegiare definition rather than a direct gloss on the term itself; researchers should treat it with care and verify whether that citation addresses allegiare or a distinct procedural usage of "alleged."
Black's (both editions) offers the stripped-down functional definition without Latin elaboration. Neither edition adds to what Burrill provides for research depth.
None of the sources trace the term's disappearance from practice or link it explicitly to the 1833 abolition of wager of law — a gap researchers should supply from statutory history independently.
Jurisdictional Note
Specific to English legal history. Wager of law and the compurgation procedures to which allegiare belongs were abolished in England by 3 & 4 Will. IV, c. 42 (1833). The term has no continuing procedural application in any common law jurisdiction.