Definition
A fortress, fortified place, or other stronghold that, under medieval English law, was treated as a distinct species of real property requiring a special royal grant for conveyance or transfer. Unlike ordinary land or buildings, an efortalice carried military and strategic significance that elevated it above the common rules of property transmission.
Why It Matters in Research
This term surfaces almost exclusively in historical English property law, particularly in sources dealing with the law of real property and feudal tenures in the medieval and early Tudor period. Researchers encountering it in primary or secondary sources should understand it as a term of art tied to a specific statutory moment — 11 Hen. VII, c. 18 — rather than a living doctrine with modern application.
The term is useful as a jurisdictional and chronological marker: its appearance in a document signals English law of the late fifteenth or early sixteenth century, or scholarly writing that draws heavily on that period. It does not appear in American law and has no modern statutory descendant. Researchers tracing the law of fortifications, crown grants, or the evolution of real property classifications from feudal to modern categories may find it a useful node connecting to broader doctrines of royal prerogative over strategic assets.
Be cautious with sources that treat it as a general synonym for "fortress" or "castle." The legal significance is specifically the conveyancing rule — that the property could not pass by ordinary grant but required special authority — not merely the physical character of the structure.
Historical Dictionary Support
Black's Law Dictionary (2nd Ed.) provides the only dictionary-level definition in the Law Mind corpus: "A fortress or place of strength, which anciently did not pass without a special grant. 11 Hen. VII. c. 18."
This entry is spare but accurate in its core proposition. The reference to 11 Hen. VII, c. 18 anchors the term to a specific English statute from 1495–96, in the reign of Henry VII, confirming that the doctrine had a formal legislative basis rather than resting solely on custom or case law.
What Black's does not address — and what the corpus broadly leaves open — is the practical scope of the doctrine: which structures qualified as efortalices, how the crown determined eligibility, and how the rule interacted with the broader law of tenures and escheats. Researchers needing that depth will need to reach beyond dictionary sources to treatises on feudal tenure and the historical records of the Tudor period. No major historical legal dictionary in the Law Mind collection provides a fuller treatment.
Jurisdictional Note
Exclusively English in origin and application. The doctrine has no American reception and is not found in any U.S. jurisdiction. Its relevance to modern research is limited to English legal history and the study of feudal and early modern property law.