Definition
In feudal law, a conquisitor is one who acquires land by purchase or other act of his own, as distinguished from one who receives land by hereditary descent. The term encompasses the purchaser, acquirer, or original grantee who brings property into a family line for the first time. Because such a person stands at the root of a new chain of inheritance, the rules governing descent from a conquisitor differed in important respects from those governing descent through an established hereditary line.
Common Language
Modern common usage (Wiktionary): Not in general modern use; survives primarily in historical, ecclesiastical, and academic contexts referring to a conqueror or one who acquires by force.
Historical common usage (Webster's 1913): Not separately defined; the concept appears through related forms. "Conqueror" carried the sense of one who acquires dominion by armed force or victory.
The legal meaning pulls sharply away from the martial connotation of "conqueror." A conquisitor in feudal property law need not have acquired land through force at all — ordinary purchase was sufficient. The significance of the term is genealogical and conveyancing, not military: it marks the person from whom a new line of inheritance begins, and that fact determined which heirs could claim and in which order.
Common Confusion
Conquisitor is sometimes read as a synonym for "conqueror" in the military sense, particularly because Blackstone invokes William the Conqueror in the surrounding discussion of descent. The confusion matters: in feudal inheritance doctrine, the relevant question is not how land was seized historically but who stands as the propositus — the root purchaser — from whom the current claimant must trace descent. A conquisitor could be a peaceful buyer; the term is a term of inheritance mechanics, not a description of conduct.
Why It Matters in Research
Researchers encountering conquisitor in historical sources are almost always working in one of two contexts: (1) treatises and commentaries on the feudal rules of descent, particularly the rule that an heir must trace through the blood of the first purchaser, or (2) Scottish and Continental feudal records, where the Latin form persisted longer than in English practice.
The key research trap is treating the term as ornamental or as merely meaning "conqueror" in the popular sense and missing its technical function in tracing the line of descent. In English inheritance law before the Inheritance Act 1833, the doctrine of descent required that an heir be of the blood of the first purchaser — the conquisitor — which could entirely cut off collateral kin who were otherwise closely related to the decedent but descended through a different line. This rule is discussed at length in Blackstone's Commentaries at 2 Bl. Comm. 242–243, the source uniformly cited across the historical dictionaries.
Researchers using the Law Mind corpus who encounter conquisitor in older conveyancing materials, pleadings, or inheritance disputes should connect the term immediately to the doctrines of descent per stirpes, the canons of descent, and the blood-of-the-first-purchaser rule. The term will not appear in modern statutes; statutory reform in England and, subsequently, in American states largely abolished the common law canons of descent that gave conquisitor its technical force.
Scottish legal materials present a separate corpus consideration. Scottish feudal tenure used cognate Latin terminology in charters and court records well into the eighteenth century, and the term's appearance there may carry slightly different doctrinal weight under Scots law than under English common law.
Historical Dictionary Support
Black's (1st ed.), Black's (2nd ed.), and Burrill's are in complete agreement: conquisitor means "purchaser, acquirer, or conqueror" in feudal law, and all three editions anchor the definition to 2 Bl. Comm. 242–243. The uniformity across editions reflects that this is a settled historical term rather than one with contested meaning.
Burrill adds the Latin derivation from conquærere (to acquire, seek out, or obtain), which is useful for reading Latin legal instruments where related forms — conquæsitus (property acquired by purchase), conquæstus (acquisition, as opposed to hereditas) — appear nearby. Researchers working with original Latin texts should note these cognates; the dictionary entries define only the agent noun but the related forms are frequently the operative terms in primary sources.
What the historical dictionaries do not supply is any doctrinal explanation of why the identity of the conquisitor mattered — that is, the rule requiring heirs to be of his blood. For that, the dictionaries function only as a pointer to Blackstone; the corpus researcher must go to the Commentaries or to treatises on real property for the substantive doctrine.
Jurisdictional Note
The term and the doctrine it embodies are principally creatures of English common law and were carried into early American property law. American statutory reform of inheritance laws, beginning in the early nineteenth century, eliminated most of the common law canons of descent, rendering the concept historically rather than operationally significant in U.S. jurisdictions. In Scotland, feudal tenure was formally abolished by the Abolition of Feudal Tenure etc. (Scotland) Act 2000, further consigning the term to archival and historical research.
Encyclopedia Cross-Reference
Law Mind Encyclopedia — Feudal Land Tenure
Law Mind Encyclopedia — Descent and Distribution
Law Mind Encyclopedia — Canons of Descent