Definition
A term appearing in two distinct legal traditions:
1. (Spanish law) The formal pleading or petition filed by a plaintiff setting forth the claim or demand against a defendant. In the Spanish legal system codified in Las Partidas, the demanda served as the foundational initiating document of litigation — the functional equivalent of a complaint or declaration in common law procedure. It stated the plaintiff's grievance, the relief sought, and the basis of the claim.
2. (Old English / Medieval Latin law) A demand; specifically, a party's asserted right or claim pursued through legal process. Appearing in early English legal texts in the Latinized form, it referred to a claim being prosecuted before a court, particularly in real property and recovery contexts.
Common Confusion
The two uses of demanda — the Spanish-law procedural pleading and the medieval English-law term for a demand or claim — are etymologically related but functionally distinct. Researchers encountering the term in old English sources (Bracton, Fleta, Statute of Westminster II) should not read it through the lens of Spanish civil procedure, and vice versa. The word also resembles but is not synonymous with the common law term DEMAND, which carries its own technical meanings in English pleading and commercial law.
Recognized Forms
/SUBTYPES
The Spanish-law demanda tradition recognized procedural distinctions in the structure and sufficiency of the petition, including requirements for clarity of the claim and identification of the parties, as elaborated in Las Partidas. The medieval English usage appears in both singular (demanda) and plural (demandas) forms in sources such as Fleta.
Why It Matters in Research
Researchers working in the Law Mind corpus will encounter demanda in two largely separate document streams, and conflating them produces analytical error.
For Spanish-law materials: The term is critical to understanding civil procedure in jurisdictions historically governed by Spanish law — including much of Latin America and the southwestern United States before and after American acquisition. Las Partidas, the thirteenth-century Castilian legal code that remained operative in many of these jurisdictions well into the nineteenth century, treated the demanda as the indispensable foundation of civil litigation. Research into early California, Texas, New Mexico, or Louisiana legal records may surface this term in original Spanish-language pleadings or in translated materials.
For medieval English sources: The Latin-inflected demanda appears in Bracton (De Legibus et Consuetudinibus Angliae), Fleta, and in the Statute of Westminster II (1285). In these contexts it functions as a synonym for a legal claim or right being asserted — not a pleading document. The phrase recovered in Burrill — si quis recuperaverit demandam suam (if one shall recover his demand) — reflects the proprietary, claim-based sense of the term common to medieval real property litigation.
A trap for the unwary: English-language dictionaries of the nineteenth century frequently folded demanda into entries on DEMAND without adequately distinguishing the Spanish procedural usage. Researchers relying solely on common law dictionaries may miss the procedural specificity the term carries in Spanish civil law sources.
Historical Dictionary Support
Black's Law Dictionary (both first and second editions) treats demanda exclusively as a Spanish law term, directing the reader to Las Partidas, pt. 3, tit. 10. The entries are nearly identical across editions — a sign that editors saw little need to expand on a term treated as self-explanatory in context.
Burrill's Law Dictionary is the most useful historical source here because it explicitly tracks both usages. Burrill cites the medieval English authorities (Bracton, fol. 17 and 35; Fleta, lib. 2, c. 39, § 1; Statute of Westminster II, c. 44; and Coke's Reports, 8 Co. 153) for the Old English sense, then pivots to Las Partidas for the Spanish-law sense. This dual treatment makes Burrill the essential starting point for researchers uncertain which tradition their source belongs to.
What the historical dictionaries miss: None of the shelf sources engage with how demanda functioned procedurally in practice — what elements a valid demanda required, how defects were raised, or how the concept translated into hybrid jurisdictions where Spanish and common law coexisted. For that, researchers must go to Las Partidas directly or to secondary scholarship on Spanish colonial and civil law procedure.
Jurisdictional Note
The Spanish-law sense of demanda remains relevant in any jurisdiction with a civil law heritage traceable to Spanish colonial governance. In the United States, this includes historical legal records from California, Texas, New Mexico, Arizona, Florida, and Louisiana. Modern civil procedure in these states has largely displaced Spanish terminology, but historical documents and early reported decisions may retain the term.