Definition
In old English land law, the calling upon a warrantor of lands to come into court and fulfill his warranty obligation. When a tenant in a real action was challenged by a demandant seeking to recover land, the tenant could "vouch to warranty" a third party — typically the grantor or someone in the chain of title who had warranted the land — compelling that warrantor to either defend the title or yield land of equivalent value to the tenant in compensation. The avoucher was the formal act of that calling-in.
The term describes both the procedural act (the calling or summoning) and, by extension, the voucher process as a whole. Burrill identifies it as derived from the Latin advocatio and Old French, rooting the concept in the idea of calling someone to one's aid. Coke used the term as an example of a technical "word of art" in pleading — a signal that precision in its use was legally material.
Common Confusion
AVOUCHER, VOUCHER, AVOW, and AVOUÉ are four distinct terms that appear in close proximity in historical sources and are easily conflated.
VOUCHER (the noun) refers to the person being called — the warrantor summoned. AVOUCHER (or VOUCHEE in some usage) is the act of calling, or the party doing the calling. AVOW is a separate concept entirely, used in replevin to describe a defendant's acknowledgment and justification of taking goods. AVOUÉ is French law terminology for a class of legal practitioners — unrelated to warranty procedure. Several historical dictionaries handle these terms together or by cross-reference, which compounds the confusion.
Why It Matters in Research
Avoucher is a term confined almost entirely to the real actions of medieval and early modern English land law — a system largely abolished by the Real Property Limitation Act 1833 and subsequent reforms. Researchers will encounter it in Year Books, Coke's commentary, and treatises on common recovery and warranty of land. It does not appear in modern practice.
The primary research trap is conflation with related terms. Bouvier's and Rapalje & Lawrence both redirect to VOUCHER without distinguishing the actor from the act, and Burrill's entry is the most substantive of the historical sources. Black's (both editions) gives only a one-line definition, which is accurate but provides no procedural context.
A researcher working in equity or conveyancing history who encounters avoucher in a primary source should trace the underlying warranty chain: who granted the land, what the warranty covered, and what remedy (land in value) was available if the warrantor could not defend. The avoucher procedure was central to the mechanics of common recovery — the fictional legal device used to bar entails — making this term relevant to research on fee tail, remainders, and the history of alienability of land.
The term will appear inconsistently spelled in manuscript and early print sources: avowcher, avouchment, and avocher are variants.
Historical Dictionary Support
Burrill's Law Dictionary provides the most substantive treatment, identifying the procedural context, the Latin root, and Coke's endorsement of it as a term of art. Burrill's entry connects it explicitly to Coke on Littleton (Co. Litt. 101b), which is the authoritative primary source for researchers who need the common law foundation.
Black's (both editions) and Bouvier's are minimal — accurate as far as they go, but they strip the term of its procedural significance. Rapalje & Lawrence omits substantive treatment entirely, redirecting to VOUCHER. None of the historical dictionaries address the distinction between avoucher as act versus avoucher as party, a gap that requires care when reading primary sources where the usage varies.
The AVOUÉ definition appearing within Black's AVOUCHER entry is a separate term included alphabetically nearby — not a definition of avoucher itself. This placement has created some confusion in secondary sources that cite Black's without distinguishing the two entries.
Jurisdictional Note
Avoucher is an English common law term with no meaningful American jurisdictional variation. Real actions were formally abolished in England in the nineteenth century and were never fully adopted in most American jurisdictions. Researchers in American colonial land law may encounter the concept in early conveyancing records, but it carries no operative legal significance in any current jurisdiction.