Definition
In old English law, COHERES (also rendered cohæres) is the Latin term for a co-heir or joint heir — a person who inherits together with one or more others from a common ancestor. The plural form is cohæredes. The term appears most prominently in the law of coparcenary, where multiple heirs (typically daughters, in the absence of male heirs under the common law) took an estate jointly by descent, each holding an undivided share. Bracton treats cohæredes as constituting a single legal body by virtue of the unity of right they share: quasi unum corpus propter unitatem juris quod habent — as if one body, because of the unity of right they hold.
Common Language
Modern common usage (Wiktionary): "Coheres" is the third-person singular simple present indicative of the verb "to cohere" — meaning to stick together, to be logically consistent, or to form a unified whole.
Historical common usage (Webster's 1913): To cohere means to stick together; to be united; to hold fast as parts of the same mass.
The legal term COHERES and the ordinary English verb "coheres" are false friends sharing only superficial resemblance. In legal sources, COHERES is a Latin noun (nominative singular), not an English verb. A reader encountering "coheres" in a Latin-heavy medieval or early modern legal text should not read it as a description of something sticking together — it identifies a legal person, a co-heir. The confusion is especially likely in printed transcriptions where Latin words appear without italics or contextual marking.
Common Confusion
COHERES vs. COHEIRS: The Latin coheres and the English "coheir" are functional equivalents and are used interchangeably in translated sources, but the Latin form signals an original source in the Romanist common law tradition — particularly Bracton — rather than later statutory or common law usage. Researchers should not assume the two terms carry identical doctrinal weight across periods.
COHERES vs. PARCENER / COPARCENER: Bracton explicitly equates cohæredes with coparceners (cohæres particeps cum co-hærede participe), but the terms are not perfectly synonymous across all authorities. Coparcenary is the more durable English legal category; coheres is primarily a Latinate term of art used in early treatise writing and does not survive into modern usage as a technical term.
Why It Matters in Research
This term appears almost exclusively in Latin-form sources — Bracton above all — and in dictionaries or treatises that draw directly on Bracton. Researchers working in pre-modern English inheritance law, particularly on questions of coparcenary descent, partition, and the unity-of-seisin doctrine, will encounter coheres and cohæredes as recurring vocabulary.
Two traps are worth flagging. First, the false-friend problem described above: in a transcribed or printed source, "coheres" looks like an English verb. Context is the only reliable guide. Second, later common law sources largely abandon the Latin term in favor of "coparcener" or "coheir," so a keyword search on coheres or cohæredes in later materials will return little — the underlying doctrine survives but the vocabulary does not.
The Bracton citations in Burrill (fol. 76b, 67b, 97b) are genuine and traceable. Bracton's De Legibus et Consuetudinibus Angliae is available in modern edited and translated form (Thorne, ed., Selden Society), which gives researchers a reliable path to verify the doctrine and context.
No equivalent entry will be found in later English law dictionaries such as Jacob, Tomlin, or Bouvier, which either fold the concept into coparcenary or use the anglicized coheir. Burrill's treatment is unusually thorough precisely because Burrill worked closer to the Romanist sources.
Historical Dictionary Support
Burrill's Law Dictionary is the sole source in the Law Mind corpus for this term, and its entry is compact but accurate. Burrill correctly identifies the Latin roots (con + hæres), correctly glosses the term as co-heir or joint heir, and correctly ties the concept to coparcenary through the Bracton citations. The Bracton quotation — quasi unum corpus propter unitatem juris quod habent — is genuine and captures the core fiction of coparcenary: that multiple parceners together constitute one heir.
What Burrill does not address: the practical legal consequences flowing from the coheres relationship (partition rights, how the unity of seisin affected alienation, the treatment of cohæredes under feudal incidents). For those questions, researchers must move from Burrill to Bracton directly, or to treatise-level treatments of coparcenary in Coke (Co. Litt.) and Blackstone (Commentaries, Book II).
No significant divergence exists across sources here because this is essentially a single-source term in the Law Mind corpus. Agreement with Burrill is by default.
Jurisdictional Note
Coheres as a technical term belongs entirely to the English common law tradition and its Romanist antecedents. The doctrine it describes — coparcenary — was received into American law but largely displaced by statutory inheritance schemes. Civil law jurisdictions use parallel concepts (co-héritier in French, coheredero in Spanish) but through an independent civilian tradition. Comparative use of the Latin coheres across common law and civil law sources requires caution.
Encyclopedia Cross-Reference
See COPARCENARY