Definition
Legitimi heredes (Latin: "legitimate heirs") is a term from Roman law referring to the class of heirs entitled to inherit from a deceased person by operation of law, specifically through the agnatic line — that is, relatives connected through the male side of the family. Under classical Roman law, these were the persons to whom an inheritance passed by default under the Law of the Twelve Tables when no valid testamentary disposition existed. The term is sometimes rendered in older texts as "legitimi haeredes" or, due to manuscript variation, "legitimi hzredes" — the last form being an artifact of transcription or typographical convention in older printed sources.
The legitimi heredes were distinct from other potential heirs in Roman law in that their claim arose not from a will or praetorian edict, but from the ancient statutory framework of the Twelve Tables itself. Their entitlement was grounded in agnation — a strictly patrilineal conception of family — rather than in blood relationship more broadly or in the later cognatic (blood-relation) system that gradually displaced it.
---
Common Confusion
The term is frequently confused or conflated with two related but distinct Roman law concepts. First, heredes sui — the immediate household heirs (children in paternal power at the time of death) — had a stronger, prior claim and are a separate category, though they may also qualify as legitimi heredes in some contexts. Second, heredes necessarii (necessary heirs, typically slaves freed by the will) had no choice but to accept an inheritance, whereas legitimi heredes could in principle abstain (abstentio). Researchers should not treat these categories as interchangeable, as their rights, liabilities, and historical development differ substantially across Roman legal periods.
---
Why It Matters in Research
This term will appear primarily in sources dealing with Roman private law, civil law history, and comparative inheritance law. Researchers working in the Law Mind corpus should be alert to several navigational issues.
First, the spelling variation is significant. The "hzredes" form in older printed dictionaries and legal texts is not a separate word but a typographical artifact — the ligature or diphthong "æ" in "haeredes" was frequently rendered in early modern printing and transcription as "ae," "æ," or, when type was worn or absent, as "z" or "e." Searching historical sources for this term requires flexible string searches across "heredes," "haeredes," "hæredes," and the corrupted "hzredes" form.
Second, the concept underwent meaningful evolution within Roman law itself. The Twelve Tables gave the legitimi heredes their core entitlement, but praetorian law — through the bonorum possessio system — progressively expanded inheritance rights beyond the agnatic line, eroding the exclusivity of the legitimi heredes category. Justinian's reforms in the Institutes and the Novels effectively reorganized Roman succession around cognatic relations, largely displacing the older agnatic framework. A source that uses legitimi heredes without specifying which period of Roman law it addresses may be describing a significantly different legal situation depending on whether the context is the Republic, classical period, or Justinianic law.
Third, this term surfaces in comparative law discussions and in civil law jurisdictions with Roman law foundations — particularly in Scottish, French, and Spanish legal scholarship — where Roman inheritance categories were absorbed, modified, or explicitly rejected in codification. Researchers tracing the lineage of forced heirship doctrines or reserved portions in civil law systems may encounter legitimi heredes as a historical antecedent even in sources that are not primarily about Roman law.
---
Historical Dictionary Support
Black's Law Dictionary (2nd Ed.) provides a compact and accurate entry: "Legitimate heirs; the agnate relations of the estate-leaver; so called because the inheritance was given to them by a law of the Twelve Tables." This definition correctly identifies the agnatic basis and the statutory origin in the Twelve Tables, and is reliable as a starting point.
However, the Black's entry does not distinguish between the Republican, classical, and Justinianic periods, nor does it address the praetorian modification of the legitimi heredes system through bonorum possessio — a development that substantially changed the practical operation of this category during the classical period. Researchers relying solely on Black's will miss this evolutionary dimension. The entry also does not address the relationship between legitimi heredes and heredes sui or the abstentio remedy available to legitimi heredes who wished to avoid liability for an insolvent estate — a distinction with practical importance in historical legal analysis.
No other source dictionaries in the current set provide a competing or supplementary entry for this term.
---
Jurisdictional Note
This is a Roman law term with no direct modern jurisdiction. Its relevance to contemporary research is historical and comparative. Civil law systems descended from Roman law — including those of France, Louisiana, Quebec, Spain, and Scotland — developed their own successor doctrines for compulsory or forced heirship, but these are governed by modern codes rather than by the legitimi heredes framework directly.
---