Definition
Fratriage is a historical term from feudal property law referring to the portion of an estate or inheritance belonging to a younger brother. Under systems of primogeniture, where the eldest son inherited the whole of a family's landed estate, fratriage described the share — typically a subordinate tenure — set apart for younger male siblings. The younger brother held this portion from his elder brother as a kind of mesne lord, rather than directly from the original grantor or overlord.
Fratriage is closely related to parage, the broader doctrine governing inheritance among brothers under feudal tenure, and operated as a specific application of that principle to the junior sibling's position.
Common Confusion
Bouvier's Law Dictionary includes an entry that conflates fratriage with a separate discussion of fraternity or brotherhood associations organized for religious, social, or trade purposes — a textual accident of compilation rather than a genuine legal connection. The two concepts are entirely distinct. Fratriage concerns feudal inheritance; the fraternity discussion concerns voluntary corporate associations. Researchers encountering the Bouvier entry should treat these as separate items that were editorially merged in some editions.
Why It Matters in Research
Fratriage is a term of feudal real property law with no surviving operational significance in modern Anglo-American legal systems. Researchers will encounter it almost exclusively in historical sources — medieval English land records, early common law treatises, and the foundational legal dictionaries that drew on those sources.
Several navigational points matter:
First, the term is functionally obsolete. No modern statute or common law doctrine uses fratriage as an operative term. If it appears in a contemporary document, it signals either historical quotation, antiquarian usage, or error.
Second, fratriage sits within a cluster of interlocking feudal tenure concepts — parage, primogeniture, coparcenary, and borough-English — that researchers must understand together to make sense of any one of them. Fratriage cannot be fully understood without grasping how primogeniture worked and what parage required of co-inheriting brothers.
Third, the historical dictionaries are thin on this term. Black's (both editions) and Bouvier offer only single-sentence definitions. Neither explains the mechanics of how fratriage tenure was held, the homage obligations (or their absence) between brothers, or how the doctrine evolved across English legal history. For substantive treatment, researchers should look beyond the dictionaries to treatises on feudal tenure — Littleton's Tenures and Coke's commentary upon it (Co. Litt.) are the foundational sources; Blackstone's Commentaries address the broader framework of descent and primogeniture.
Fourth, the Bouvier compilation anomaly noted above is a genuine trap. Researchers using older digitized or OCR-processed versions of Bouvier may find the fratriage entry run together with unrelated associational law material. Verify against a clean edition before relying on any Bouvier text for this term.
Historical Dictionary Support
The historical dictionaries agree on the core definition without variation: fratriage is a younger brother's inheritance. Black's Law Dictionary, Black's 2nd Edition, and Bouvier's Law Dictionary each state this in nearly identical terms, suggesting they share a common source and that the definition had settled early into a standard formula.
What the dictionaries do not address is the feudal mechanism underlying the term. Under parage, when land descended to multiple brothers, the eldest held the entirety in chief, and younger brothers held their shares from him. Fratriage describes the younger brother's tenure in this arrangement — held without homage to the elder, on the theory that homage between brothers of equal blood would be inappropriate, but with fealty acknowledged. This doctrinal nuance, central to understanding why the term existed as a distinct legal category, is absent from all three dictionary sources consulted.
Bouvier's cross-reference to "COLLEGE FRAT" and the associational fraternity material appears to be a formatting or editorial artifact in certain editions and carries no legal significance for this entry.
Jurisdictional Note
Fratriage is a term of English feudal law and has no meaningful separate development in American, Scottish, or civilian legal traditions. American land law abandoned feudal tenure structures at or shortly after independence, rendering fratriage inapplicable in any U.S. jurisdiction.