Definition
A Latin term from medieval English legal Latin denoting a parcener — that is, one of several persons who hold land jointly by descent, particularly as co-heirs. The term also carried the related meaning of one of several commoners sharing rights in common land. In either sense, the word identifies a person whose interest in land or common rights is held concurrently with others, each possessing a distinct but undivided share.
Common Confusion
PERCENNARIUS and PARCENER are functionally the same concept. Percennarius is simply the Latinized form used in formal pleading and legal records of the medieval period, while parcener is the anglicized term that appears in common law texts and later English legal writing. Researchers encountering percennarius in manuscript or printed sources should treat it as equivalent to parcener and consult authority under that heading. The term should not be confused with COPARCENER, though the concepts overlap — coparcenary is the more precise modern term for the tenancy created among co-heirs.
Why It Matters in Research
This term is essentially confined to medieval and early modern Latin legal records — plea rolls, Year Books, and treatises written in law Latin. Researchers working in those sources will encounter percennarius where a later source would use parcener or coparcener. The practical risk is misreading the term as a generic descriptor for any joint holder when its technical meaning is more specific: a co-heir or co-commoner whose interest derives from shared inheritance or shared rights in common, not from a voluntary conveyance or agreement.
The reference in Burrill to Fleta, Book 4, Chapter 24 is the key anchor. Fleta is a late thirteenth-century English legal treatise closely modeled on Bracton, and its use of percennarius in the context of common rights illustrates how the term spanned both the inheritance and commons contexts. Researchers tracing the development of parcenary tenure or rights of common should treat Fleta as a primary source and verify that the passage cited by Burrill addresses the specific context — inheritance versus common rights — relevant to their inquiry.
Because percennarius drops out of English legal vocabulary relatively early, it will not appear in post-medieval statutes or equity reports. Its presence in a source is itself a dating and genre signal: the document is likely a Latin plea roll entry, a writ, or a medieval treatise. Researchers should not expect to find the term in Blackstone, Coke, or any anglophone treatise tradition; those sources use parcener or coparcener exclusively.
There is no meaningful jurisdictional variation to track for this term. It is a product of the common law's Latin-record period and does not persist into the distinct American or colonial legal traditions in this form.
Historical Dictionary Support
Burrill's is the only source in the Law Mind corpus that records this term, and his entry is brief: he identifies it as old English law Latin, glosses it as parcener or one of several commoners, and cites Fleta. That economy is appropriate — percennarius is not a term that generated doctrinal controversy or required extended treatment in the dictionaries. Cowell's Interpreter and Spelman's Glossarium, standard references for medieval legal Latin not present in the current corpus, would likely offer similar treatment if consulted, given that both works systematically glossed Latin and Law French terms from the Fleta-era record.
What Burrill's entry does not develop is the distinction between the two senses — co-heir and co-commoner — which are related but not identical in the medieval common law. A parcener in the inheritance sense holds by descent under the rules of coparcenary; a commoner in the rights-of-common sense holds by custom, grant, or prescription. Fleta appears to use percennarius in the context of common rights, making Burrill's gloss slightly broader than the cited source strictly supports. Researchers relying on the term in a specific text should verify which sense is operative from context rather than assuming the two are interchangeable.