Definition
An archaic legal term meaning aid, assistance, or relief. Also used historically to denote a subsidy — that is, a grant of financial support, typically from a legislative body or sovereign authority to fund public purposes or military expenditure.
The term is obsolete in modern legal usage and survives only in historical legal texts and early English law sources.
Common Language
Modern common usage (Wiktionary): Not recorded as a current English word.
Historical common usage (Webster's 1913): Not recorded as a standard English word in Webster's 1913.
Editorial note: "Eyde" has no foothold in ordinary English, modern or historical. Its presence in legal sources is entirely archaic, drawn from Old French and Anglo-Norman legal vocabulary. Researchers encountering the term outside of historical dictionaries should treat it as a transcription variant or scribal form rather than a term with living usage.
Common Confusion
Black's Law Dictionary (2nd Ed.) appends "BYE-WITNESS" immediately after the definition of "eyde," suggesting a printer's or editorial anomaly in that edition rather than a meaningful substantive connection between the two terms. Researchers consulting the second edition should treat this as a formatting artifact, not a cross-reference with legal significance.
Why It Matters in Research
The primary research challenge with "eyde" is simple recognition: the term appears in medieval and early modern English legal manuscripts, Year Books, and statutes where spellings were highly variable. Researchers working in pre-modern English legal sources — particularly those touching on feudal obligations, parliamentary taxation, or crown subsidies — may encounter "eyde," "eide," "aide," or "ayde" as variant spellings of the same concept. Failure to recognize these as cognates can result in missed sources.
The subsidy sense of the term connects directly to the broader history of parliamentary taxation in English law. Early subsidies (called "aids" or "eydes") were granted by Parliament to the Crown for specific purposes, most commonly war or ransom of the sovereign. This usage predates the modern sense of "subsidy" and carries distinct constitutional overtones about the relationship between Crown and Parliament.
Researchers using the Law Mind corpus who are tracing the history of public finance, taxation authority, or feudal obligations should treat "eyde" as an entry point into a family of related terms — aid, subsidy, tallage, scutage — that collectively describe how medieval and early modern sovereigns raised revenue.
Historical Dictionary Support
Both editions of Black's Law Dictionary consulted here offer identical core content: aid, assistance, relief, and subsidy. Neither edition provides a substantive historical discussion, Latin equivalents, statutory examples, or case authority. This brevity is consistent with how both editions treat fully obsolete terms that had ceased to generate litigation by the time of publication.
The second edition entry is notable only for the apparent typographical intrusion of "BYE-WITNESS" at the end of the definition, which appears to be an editorial or printing error rather than substantive legal content. Researchers relying on the second edition for this entry should cross-check against the first edition.
What the historical dictionaries do not provide — and what researchers should seek elsewhere — is the term's connection to the Anglo-Norman legal tradition, where "eyde" (from Old French "aide") was a technical term for specific feudal dues owed by a vassal to a lord. This narrower feudal meaning is distinct from the broader sense of subsidy and matters for researchers working in property law history or the law of tenure.
Jurisdictional Note
"Eyde" is a term of English legal history with no independent development in American, Scottish, or other common law jurisdictions. It does not appear in colonial American legal sources with any regularity and has no statutory or common law life outside the English medieval and early modern tradition.