Definition
A fee paid to the owner of an emphyteutic estate (the dominus, or lord of the soil) when the emphyteuta — the long-term tenant holding under emphyteusis — transferred the property to a new holder by any voluntary act other than inheritance. The laudemium was not owed when the emphyteusis passed to an heir by succession, only when it moved to a stranger: by sale, gift, devise, or exchange. Under Roman civil law, the payment was fixed at one-fiftieth of the purchase price. Its function was to secure the dominus's acceptance of the incoming tenant and to acknowledge the continuing superiority of the owner's title over the land. In old English practice, a functionally equivalent payment was known as acknowledgment money.
Common Confusion
Laudemium is sometimes loosely grouped with relief, heriot, or fine on alienation in feudal English tenure, but these are distinct institutions. Relief was paid by an heir entering an inheritance; laudemium specifically was not owed by heirs at all. The closest English analogue is the fine paid by a copyholder to a lord upon alienation of a copyhold tenement — Rapalje & Lawrence draw precisely this comparison — but copyhold fine operated within English customary tenure, while laudemium is a creature of Roman and civil law emphyteusis. Researchers should not assume that sources discussing one concept will illuminate the other in any systematic way.
Why It Matters in Research
Laudemium appears almost exclusively in sources dealing with Roman law, civil law jurisdictions, and early modern European land law. Researchers will encounter it primarily in treatises on emphyteusis, in ecclesiastical and canon law contexts (the Catholic Church historically held vast emphyteutic grants), and occasionally in Louisiana legal history, where civil law tenure survived American acquisition. In Louisiana sources, emphyteutic arrangements and their attendant obligations — including laudemium-style transfer fees — persisted into the nineteenth century and generated litigation distinct from common law landlord-tenant disputes.
Two navigational traps are worth flagging. First, because laudemium is denominated in terms of purchase price, historical documents may record it as a fraction or percentage without naming it; researchers scanning conveyance records or notarial archives for emphyteutic transactions should watch for payment of one-fiftieth or two percent of sale value to a grantor or ecclesiastical body. Second, in ecclesiastical contexts the dominus receiving laudemium was often a bishop, chapter, or religious house, meaning the payment appears in church administrative records rather than secular court filings. A researcher looking only in civil court records may miss the bulk of the documentary record.
The rate — one-fiftieth — is consistently stated across all dictionary sources, which is useful for identifying the payment in historical documents where the term itself does not appear.
Historical Dictionary Support
Black's Law Dictionary (both the first and second editions) and Rapalje & Lawrence are in close agreement on the substance. All three sources define laudemium as the fee owed to the dominus upon voluntary alienation to a non-heir, and all three fix the civil law rate at one-fiftieth of the purchase price. Black's (both editions) cites Mackeldey's Roman Law (§ 328) as authority for the rate and structure; Rapalje & Lawrence cites Brown without specifying the work, but the substantive content aligns. The principal difference is editorial emphasis: Rapalje & Lawrence makes the explicit comparison to the copyholder's fine on alienation of copyhold, which Black's does not, and notes the carve-out for sales back to the dominus himself — an alienation to the lord extinguished the emphyteusis rather than triggering a fee.
What the historical dictionaries collectively understate is the practical significance of laudemium in ecclesiastical land management and in civil law jurisdictions outside the classical Roman context. Their treatment is narrowly doctrinal and Roman-law-focused, with the English cross-reference to acknowledgment money serving as a one-line bridge to common law practice. Researchers needing to work with actual historical transactions — rather than abstract doctrine — will need to move from these dictionary entries to specialized treatises on civil law property and canon law land tenure.
Jurisdictional Note
Laudemium as a legally operative concept is relevant primarily in jurisdictions with civil law or mixed legal heritage. In the United States, Louisiana is the principal jurisdiction where emphyteutic tenure had historical force; the Louisiana Civil Code has addressed emphyteusis in various forms. In common law jurisdictions, laudemium is a historical and comparative concept only, with acknowledgment money being the closest surviving trace.