Definition
To whiten or make white. In old English law, *dealbare* (Latin) referred to the act of converting base or debased money into silver — "white money" — or its equivalent value. The term appears principally in the phrase *dealbare firmam*, meaning to whiten a rent or farm: that is, to commute or convert a rent payment made in base coin or kind into payment in silver currency.
The practical operation was one of monetary conversion or revaluation. Where a *firma* (a fixed farm rent, typically paid to a lord or the Crown) had been rendered in base metal, mixed coin, or commodity, *dealbare* described the process of standardizing that payment upward to silver — the recognized monetary standard of medieval English commerce and royal accounting.
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Why It Matters in Research
This is a term almost exclusively confined to medieval and early English legal sources. Researchers will encounter it in manorial records, exchequer accounts, and chronicles of feudal tenure — not in modern legal instruments. Its significance is narrow but precise: it speaks directly to the monetary mechanics of the *firma* system, and misreading it as a general term for whitening or cleansing (its literal Latin sense) will produce a distorted understanding of the underlying legal transaction.
The key research trap is conflating *dealbare* with simple payment or discharge of a debt. The term is specifically about currency conversion — the upgrading of base payment to silver — not merely the satisfaction of an obligation. In exchequer and pipe roll contexts, the distinction matters: *dealbare firmam* signals a monetary standardization event, not just a rent receipt.
Researchers working on feudal land tenure, manorial administration, or the history of English public finance will find this term embedded in Latin administrative records. Because it is rarely glossed in the records themselves, without a reliable law dictionary source it is easily misread. Burrill preserves it precisely because it was already archaic by the time of the great law dictionaries — later compilers largely dropped it.
No modern statutory or common law usage survives. The term is purely of historical and antiquarian legal interest.
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Historical Dictionary Support
Burrill's Law Dictionary is the primary surviving reference for this term in the Anglo-American dictionary tradition. Burrill traces it to *albus* (white) and defines *dealbare firmam* as converting base money in which rent was paid into silver or its value — a succinct entry that captures the operative legal meaning without elaboration.
Later major dictionaries — including Black's Law Dictionary across its editions and Bouvier's Law Dictionary — do not carry this term, reflecting its obsolescence even by the nineteenth century. Spelman's *Glossarium Archaeologicum*, the great repository of medieval Latin legal terms, is the natural companion source for researchers working beyond Burrill, as it treats the vocabulary of the exchequer and manorial system with greater depth than any American law dictionary.
The incompleteness of Burrill's entry — the definition trails off mid-sentence in the surviving text — is itself a research signal: it is possible that the original entry contained further elaboration on the exchequer context or related phrases that did not survive in the digitized record. Researchers relying solely on the truncated Burrill text should treat it as a starting point and consult primary Latin glossaries for a fuller treatment.
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Jurisdictional Note
Purely English in origin and application. The *firma* system and its associated monetary conventions were features of medieval English manorial and royal administration. No parallel usage developed in other common law jurisdictions, and the term carries no operative meaning in American, Canadian, or other common law systems.
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