Definition
An Old French legal term used in early English law to designate the civil law — that is, the Roman law or the body of legal principles derived from Roman jurisprudence. The term appears in Year Books of the fourteenth century as a label distinguishing the civilian tradition from the indigenous common law of England. It was sometimes rendered as ley escripte (the written law), reflecting the Roman law's basis in written codes and texts, as opposed to the unwritten customary law of England.
Common Confusion
LEY CIVILE should not be confused with the civil law in the modern American sense, where "civil law" typically contrasts with criminal law (governing disputes between private parties rather than state prosecutions). In the Old French legal vocabulary of medieval England, ley civile referred specifically to the Roman law tradition — a distinct jurisprudential system — not to the civil-versus-criminal procedural divide that dominates modern legal usage. Researchers encountering the term in Year Books or early English legal texts should not read modern civil-law meaning backward into the phrase.
Why It Matters in Research
This term is a navigational marker rather than an operative legal concept. Encountering ley civile in a source signals that the author or court was self-consciously situating a question within — or contrasting it against — the Roman law tradition. In the Year Books and early English common law writing, such references often arose when courts were distinguishing what the common law required from what the civil or canon law might otherwise provide. The term therefore functions as a signal of jurisprudential tension or comparison, not as a standalone doctrine.
Researchers working in medieval English legal history, ecclesiastical law, or the reception of Roman law in England should note that ley civile, ley escripte, and similar Old French variants appear interchangeably in the sources. Burrill's identification of the equivalence between ley civile and ley escripte (the written law) is useful: if one variant does not appear in an index, the other may. Both terms point toward the same conceptual referent.
The term has no operative role in modern Anglo-American law. It will not appear in contemporary statutes, regulations, or case law. Its research value is entirely historical and comparative.
Historical Dictionary Support
All three source dictionaries agree on the core definition: ley civile means the civil or Roman law as used in old English legal sources. Black's and Burrill both cite Yearb. H. 8 Edw. III as authority. Burrill adds the additional citation to 10 Edw. III and supplies the synonym ley escripte, making his entry the most complete of the three on the linguistic variants.
Rapalje and Lawrence's entry is the briefest but appends a related entry for ley gager (a wager of law; one who commences a lawsuit, citing Cowell), which is a distinct term appearing in proximity in alphabetical arrangement rather than a true synonym or subtype of ley civile. Researchers should not infer a doctrinal connection between the two based on their proximity in Rapalje and Lawrence's dictionary.
None of the historical dictionaries elaborates on the substantive content of the Roman law being referenced or explains the specific contexts in which Year Book courts invoked the term. For that background, researchers will need to consult histories of the reception of Roman and canon law in England.
Encyclopedia Cross-Reference
No Law Mind Encyclopedia entry directly addresses ley civile or the reception of Roman law in early English legal history. The matched entry — Fraud Penalty Civil (The Law Mind Tax Encyclopedia) — is not relevant to this term.