Definition
Latin. In old English property law, prima tonsura means "the first mowing" or "the first crop of grass." The term refers to a right attached to land entitling its holder to take the first cutting of grass from a meadow or field in a given season. It could arise as a grant in its own right — conferring on a grantee the right to harvest the first crop — or as a feature of a broader property arrangement governing the use and enjoyment of grassland.
Why It Matters in Research
Prima tonsura is a term of art from medieval and early modern English land law, encountered almost exclusively in old real property actions, pleadings, and conveyancing records. Researchers working in those areas should note several navigational points.
The term appears in contexts involving common of pasture, profit à prendre, and the apportionment of seasonal use rights in meadows held in common or subject to competing claims. It is closely related to the concept of "fore-crop," which Burrill identifies as the plain-English synonym drawn from 7 East 200. When reading older reports and pleadings, researchers may encounter "fore-crop" where they expect "prima tonsura," and vice versa. These are the same right.
The right was litigable. Burrill cites Cro. Car. 362 and Roscoe's Real Actions 486 as authorities, indicating that disputes over the first crop were sufficiently common to generate reported decisions and procedural treatment in treatises on real actions. Researchers tracing a historical property dispute involving grassland use should check both the Latin form and its English equivalent in indices and digests, as indexing practice was inconsistent.
The term rarely appears after the nineteenth century. Modern property law has no direct functional equivalent as a distinct named right, though the underlying interest — a right to take a specific natural product from another's land at a particular time — survives within the broader category of profits à prendre. Researchers should not expect to find prima tonsura in modern American sources; its habitat is English real property law through roughly the early nineteenth century.
Historical Dictionary Support
The four source dictionaries are in close agreement on the core meaning. Black's (both editions), Rapalje & Lawrence, and Burrill all define prima tonsura as "the first mowing" or "the first crop of grass," and all note that it could exist as a grant of a right rather than merely as a descriptive term for the crop itself. There is no meaningful divergence among the sources on substance.
Burrill's entry is the most developed. It supplies the English synonym "fore-crop" with a citation to 7 East 200, adds Cro. Car. 362 alongside the Chittenden citation shared by the other dictionaries, and references Roscoe's Real Actions. This makes Burrill the most useful starting point for researchers tracing the term into primary sources.
Rapalje & Lawrence offer only a bare cross-reference entry ("the first crop"), which is unhelpful for research but confirms that the term was considered sufficiently established to warrant inclusion.
None of the historical dictionaries address the procedural mechanics of how the right was asserted or defended in litigation, nor do they discuss how the right was created by grant or whether it ran with the land. For those questions, Roscoe's Real Actions and Chitty's General Practice (cited by both Black's and Burrill) are the indicated secondary sources.