Definition
A Latin phrase used in early English legal proceedings meaning "upon the suggestion" or "upon the information" of a party. The term appears in writs and judicial records to indicate that a proceeding was initiated or a court's action taken on the basis of a suggestion, complaint, or representation made by an informant or petitioner — rather than on the court's own motion or on formal pleading in the ordinary sense. It functioned as a formulaic recital identifying the source of the court's knowledge or the occasion for its jurisdiction.
In practice, ex insinuatione introduced the identity of the person whose complaint or information prompted the issuance of a writ or the exercise of royal or judicial authority. The phrase is closely tied to the Latin insinuatio, which in medieval legal usage referred to the act of bringing something formally to the notice of a court or official — a kind of official suggestion or intimation rather than a sworn pleading.
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Common Confusion
EX INSINUATIONE vs. EX PARTE. These are not synonyms. Ex insinuatione identifies the source of the court's information — whose suggestion prompted action. Ex parte identifies the structure of the proceeding — one party present, the other absent. A proceeding might be both (initiated upon someone's suggestion and conducted without the opposing party), but the terms describe different legal facts. Substituting one for the other in reading or transcribing early records will misrepresent the procedural posture.
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Why It Matters in Research
This term belongs almost exclusively to the formulaic Latin of early English writs and Year Book pleading. Researchers working in pre-modern legal records — particularly Year Books, Registra Judicalia, chancery materials, and ecclesiastical court documents — will encounter it as part of standardized writ language rather than as a term of substantive legal doctrine.
Several navigational points matter here:
First, the term is a writs-and-forms artifact. Its significance is procedural and formulaic: it signals that a writ or proceeding originated from a private suggestion or complaint rather than from a public prosecution or the court's own initiative. Understanding this distinction helps researchers decode the structure of early writs and identify the informant or moving party in a proceeding.
Second, do not conflate ex insinuatione with ex parte. Both involve asymmetrical proceedings, but ex insinuatione specifically marks the occasion of the court's action — identifying whose suggestion triggered it — whereas ex parte describes proceedings where one side is absent or unrepresented. The concepts can overlap in practice but are not interchangeable as terms of art.
Third, the ecclesiastical law connection is significant. Insinuatio and its variants appear with some frequency in canon law and ecclesiastical court records, where the "suggestion" of a party could formally invoke jurisdiction. Researchers examining church court records alongside common law materials should be alert to the term carrying slightly different procedural weight depending on the forum.
Fourth, because this phrase is found in Year Book citations and the Registrum Judiciale, researchers relying on later digests and abridgments may find it rendered inconsistently — sometimes translated, sometimes left in Latin, sometimes paraphrased. Cross-referencing against original Year Book text is advisable when the precise procedural context matters.
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Historical Dictionary Support
Burrill's Law Dictionary provides the only shelf-source entry for this term and keeps it brief: "the suggestion or information," with citations to Year Book Pasch. 8 Edw. III, pl. 24, and Registrum Judiciale, p. 25. Burrill does not elaborate on substantive doctrine, which is accurate — there is little doctrine to elaborate. The term is a formula, and Burrill treats it accordingly.
What historical dictionaries as a class tend to miss is the ecclesiastical dimension of insinuatio. The concept had a robust life in canon law, where formal insinuation to a court or ordinary was a recognized procedural act. Researchers who encounter ex insinuatione in ecclesiastical or mixed-jurisdiction records should not assume the common law writ usage translates directly.
No significant divergence among historical sources exists here because coverage is so thin — Burrill stands essentially alone on the shelf for this phrase in English legal lexicography.
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