Definition
A historical common-law writ used in real actions to formally summon a person who had been vouched to warranty — that is, called upon by a defendant to fulfill a prior guarantee of title to land. When a tenant in a real action vouched a third party (the vouchee) to defend the title they had warranted, the andum issued to compel that vouchee's appearance in court.
The term derives from the Latin formula "you are summoned to warranty," reflecting the procedural role of the writ: it was the mechanism that converted a voucher's informal obligation into a compelled court appearance.
Why It Matters in Research
Andum is a term of deep historical obsolescence. Researchers will encounter it only in the context of medieval and early modern English real actions — the now-abolished category of possessory and proprietary land suits that predated modern ejectment. The writ has no surviving procedural counterpart in any common-law jurisdiction today.
The key navigational point: andum cannot be understood in isolation. It is one step within the voucher-to-warranty process, itself embedded in the larger machinery of real actions. A researcher finding "andum" in a historical pleading or treatise should immediately locate the surrounding voucher proceedings to understand the full transactional and procedural context. The writ signals that a warranty obligation on land title was being judicially enforced, which may carry significance for tracing chains of title in historical property disputes.
Real actions were abolished in England by the Real Property Limitation Act 1833 and largely fell out of use in American jurisdictions even earlier, displaced by the action of ejectment. Primary source materials referencing andum will therefore almost exclusively predate the nineteenth century. Burrill's Law Dictionary and Roscoe's treatise on real actions (cited in Bouvier) are the most direct secondary guides for researchers working through such materials.
Historical Dictionary Support
Bouvier's Law Dictionary provides the only entry among the shelf sources. Bouvier defines andum tersely as "[y]ou summoned to warranty" and identifies it as a writ issuing to summon a vouched party, citing Burrill and Roscoe's Real Actions at page 268. The entry is minimal, consistent with the term's narrow procedural function — it was never a term of broad legal discourse, but rather a technical label for a specific writ form within the highly formalized world of real actions.
No other historical dictionary in the Law Mind corpus appears to carry this term independently, which itself reflects how quickly the procedural context for the writ disappeared from active legal practice. Bouvier's retention of it through successive editions owes more to the dictionary's comprehensive historical ambition than to any contemporary relevance at the time of publication.
Researchers should note that Bouvier does not define the warranty obligation itself under this entry; the substantive law of warranty in real actions must be pursued separately through treatise literature on tenure and common-law land transfer.
Jurisdictional Note
Andum was a writ of English common law and would have been available in American colonial and early republic courts that inherited real actions from English practice. With the abolition or displacement of real actions across American jurisdictions during the nineteenth century, the writ ceased to have any operative legal role. It is not recognized in any modern procedural system.