Definition
Advocatio is a Latin legal term carrying two distinct meanings depending on the legal system in which it appears.
1. In Roman and civil law: The office, function, or practice of an advocatus — that is, the professional business of legal advocacy. The term encompasses both the act of pleading on behalf of another and the institutional role of the advocate within the Roman legal system.
2. In old English and canon law: An advowson — the right of a patron to present a candidate to a vacant ecclesiastical benefice (a church living). This usage renders advocatio effectively synonymous with jus patronatus (the right of patronage) and jus presentationis (the right of presentation). The holder of an advowson had the legal power to nominate a clergyman to fill a vacant parish position, subject to episcopal approval.
These two meanings are not etymologically accidental. Both derive from the Latin advocare (to call upon or summon), and both involve a formal act of calling or presenting — whether calling upon someone to plead in court, or calling a cleric to a benefice.
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Common Confusion
The civil law meaning (legal advocacy) and the English ecclesiastical law meaning (advowson) share a single Latin term but describe entirely different legal institutions. A researcher encountering advocatio in a Roman law source is reading about courtroom representation; the same word in a medieval English or canon law source almost certainly refers to a property-like right over church appointments. Conflating the two meanings distorts both contexts. In English legal usage, the advowson sense became dominant, and advocatio in English sources should be presumed to carry that meaning unless context clearly indicates otherwise.
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Recognized Forms
/SUBTYPES
In its advowson sense, advocatio tracks the subtypes recognized under English law for advowsons generally:
- Advocatio appendans: An advowson appurtenant — attached to and passing with a manor or other dominant estate.
- Advocatio in grosso: An advowson in gross — held as an independent right, not attached to land.
These subtypes were formally recognized in English legal literature and are relevant to property and ecclesiastical law research.
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Why It Matters in Research
The double meaning of advocatio is a significant research trap. A term search across a mixed corpus — drawing on Digest commentaries, canon law compilations, and English common law sources — will return results from incompatible legal contexts without flagging the distinction.
Researchers working in Roman law sources (Justinian's Digest, the Code) will find advocatio used consistently in the professional advocacy sense. The Digest citations in Burrill's entry (Dig. 6.1.54, Dig. 5.2.32, Dig. 38.2.14) and the Code citations (Cod. 2.7.6, Cod. 2.8.5) are Roman law sources discussing the advocate's role and function — not church patronage.
Researchers working in English ecclesiastical property law, medieval records, or treatises on advowsons (such as Cowell's Interpreter, which Burrill cites) will find advocatio used almost exclusively in the advowson sense. The English legal system developed an elaborate body of law around advowsons as a species of incorporeal hereditament — a property right capable of being inherited, conveyed, and litigated — and advocatio in that literature carries the full weight of that development.
The advowson right had practical consequences well beyond mere church appointments. It was litigable in the common law courts (via the writ of right of advowson and related writs), it affected succession and conveyancing, and it was a source of significant conflict between secular and ecclesiastical authority through much of the medieval period. Researchers tracing disputes over church appointments in English records should be alert to advocatio as the controlling term.
The civil law meaning is less frequently the source of confusion for English law researchers but becomes significant in comparative law research, civil law jurisdiction sources, and scholarship on the Roman legal profession.
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Historical Dictionary Support
Burrill's treatment is the primary source for English-language legal dictionary coverage of this term, and it correctly identifies both meanings without conflating them — a notable clarity for a mid-nineteenth-century compilation. Burrill anchors the civil law sense in Digest and Code citations and the English sense in Cowell, which is appropriate: Cowell's Interpreter (1607) is a standard early modern English source for ecclesiastical and Latinized legal terminology.
The entry as preserved in Burrill is incomplete at its tail end — the fragment "animalia vagantia quae nullus..." suggests Burrill was in the process of distinguishing a related term or illustrating a usage before the text breaks off. This is a textual limitation in the source itself, not an error of interpretation, and researchers should be aware that the surviving Burrill entry on this point is truncated.
No major competing dictionary treatment has been identified in the available sources. Researchers needing deeper civil law coverage should consult Berger's Encyclopedic Dictionary of Roman Law (1953) under advocatus and related entries, which provides fuller context for the institutional role.
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Jurisdictional Note
The advowson meaning of advocatio is specific to English and Anglo-Norman ecclesiastical property law. It has no operative equivalent in American law, where the constitutional separation of church and state eliminated the legal infrastructure that made advowsons a cognizable property right. The civil law meaning retains relevance in civil law jurisdiction scholarship and in Roman law sources globally.
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