Definition
Feudum francum (Latin: "free feud") is a historical term from feudal land law denoting a tenure held freely — that is, without obligation to pay talliage or other common fiscal burdens imposed on inferior or plebeian tenures. It describes a class of feudal holding considered noble in character, distinguished from the plebeia feuda (vulgar or common feuds) that carried additional financial obligations to overlords or the crown. The term belongs to the medieval taxonomy of feudal tenures and has no operative significance in modern law.
Common Confusion
FEUDUM FRANCUM vs. FRANKALMOIN vs. FREE AND COMMON SOCAGE: These three categories are easily conflated because each uses "free" language and each describes tenure without certain burdens, but they are distinct. Frankalmoin (free alms) was tenure by a religious corporation in exchange for spiritual services. Free and common socage was the dominant form of lay free tenure in English common law, defined primarily by certainty of services rendered. Feudum francum is the broader continental and early English category from which some of these distinctions evolved — it is the genus; the others are species. Historical sources frequently use the terms interchangeably in pre-Conquest and immediately post-Conquest contexts, which creates significant interpretive traps in early records.
Why It Matters in Research
Researchers will most often encounter feudum francum in two contexts: Latin legal manuscripts and glossaries from the medieval and early modern periods, and secondary treatises on the history of English land law. The term appears frequently in Spelman's Glossarium Archaeologicum and similar antiquarian works that Black's Law Dictionary draws upon, meaning that its authority chain runs through historical compilers rather than reported case law. Do not expect to find the term in English equity reports or post-1660 common law cases — by that period, the feudal taxonomy had been largely superseded by the Tenures Abolition Act 1660, which converted most surviving feudal tenures into free and common socage.
The critical research trap is anachronism: applying the feudum francum / plebeia feuda distinction to periods or jurisdictions where it was not operative. The distinction was alive in continental feudal systems — particularly as synthesized in the Libri Feudorum — and was imported into English legal writing primarily as learned commentary rather than as working doctrine. Researchers examining English medieval land disputes should treat feudum francum as descriptive vocabulary rather than as a term with precise procedural or jurisdictional consequences in English courts.
In the Law Mind corpus, this term serves as a connector concept. It links the continental feudal tradition (Libri Feudorum) to the English common law taxonomy of tenures developed in Littleton, Coke on Littleton, and later systematized by Blackstone. A researcher tracing the genealogy of free tenure concepts will pass through feudum francum on the way from Roman and Lombard sources to the English doctrine of seisin and fee simple.
Historical Dictionary Support
Black's Law Dictionary (citing Spelman) defines feudum francum as "a free feud — one which was noble and free from talliage and other subsidies to which the plebeia feuda were subject." This is the entry's entire substantive content, and it reflects the general approach of early legal dictionaries to feudal terminology: brief definition, single authority, no procedural elaboration.
Spelman's Glossarium Archaeologicum is the foundational source here and one of the most reliable for medieval Latin legal terms. Spelman worked from primary documentary sources and was careful to distinguish English from continental usage. The reliance on Spelman without further elaboration in Black's is characteristic of terms that were historically significant but had ceased to be litigated by the time modern legal dictionaries were compiled.
What historical dictionaries miss: none of the standard historical dictionaries contextualize feudum francum within the Libri Feudorum tradition or explain how the noble/plebeian feud distinction mapped (imperfectly) onto English tenure categories after the Conquest. Researchers seeking that analysis must go directly to Spelman, to the feudal law commentaries of Craig (Jus Feudale), or to modern histories of English land law such as Milsom's Historical Foundations of the Common Law.
Jurisdictional Note
Feudum francum as an operative category belongs to the continental feudal tradition and to English law only in its earliest, most Norman-influenced phase. Scotland retained a more robust feudal tenure system significantly longer than England, and Scots law sources — particularly Craig's Jus Feudale — use the term with greater technical precision than English common law sources. Researchers working in Scottish legal history will find the term more doctrinally alive than in English materials of equivalent periods.
Encyclopedia Cross-Reference
See: Feudal Tenure; Fee Simple; Frankalmoin; Tenures Abolition Act 1660