Definition
A Latin term from Roman civil law meaning son-in-law — specifically, a daughter's husband. The term was used in Roman legal texts to identify a particular familial relationship for purposes of succession, inheritance, and the rules governing obligations between relatives by marriage.
Why It Matters in Research
GENER is a term of art in Roman and civil law sources, not in Anglo-American common law. Researchers encounter it almost exclusively when reading Latin legal texts, historical treatises rooted in the civil law tradition, or primary sources from jurisdictions with a Roman law heritage (Louisiana, Quebec, South Africa, Scotland). It will not appear in English-language case law or statutes as a standalone operative term.
The principal research trap is misreading GENER in a Latin passage and confusing it with the broader Latin adjective *generalis* (general) or the noun *genus* (kind, class). These are entirely unrelated words that appear frequently in legal Latin and share a superficial resemblance. Context will almost always resolve the ambiguity — GENER appears in familial or succession contexts; *generalis* appears in doctrinal or procedural contexts.
When tracing inheritance rights of sons-in-law in historical civil law materials, GENER is the index term to know. The Digest passages cited by the dictionaries (Dig. 38.10.4.6 and Dig. 50.16.136) fall within the titles governing succession rights of cognates and the meaning of family relationship terms, respectively. The Dig. 50.16 passage is particularly useful because Book 50, Title 16 of the Digest (*De verborum significatione*) is the Roman law glossary — it defines legal terms of art, and finding GENER there confirms it carried a precise technical meaning, not merely a colloquial one.
Researchers using Law Mind's civil law or Roman law corpus should cross-reference succession and affinity materials when GENER appears. The son-in-law's position in Roman succession law was shaped by whether the marriage was *cum manu* or *sine manu*, affecting whether the wife (and by extension her husband) stood in the agnatic line of her father's family.
Historical Dictionary Support
All three source dictionaries are in complete agreement: GENER means son-in-law, rendered in parallel phrasing as *filiae vir* (husband of a daughter). The consistency across Black's first and second editions and Burrill reflects that this is a stable, uncontested Latin definition with no doctrinal evolution in the Anglo-American sources. Burrill adds the additional Digest citation (Dig. 50.16.136), which Black's omits — a useful supplement for researchers who want to locate the definitional treatment in Roman primary sources rather than the succession context alone.
What the historical dictionaries do not address is the broader family structure in which GENER operated. Roman law distinguished sharply between agnatic kin (those connected through the male line) and cognatic kin (those connected through blood more broadly, including through women). A son-in-law's legal position depended on this framework in ways the brief dictionary entries do not explain. For deeper treatment, researchers should turn to civil law institutional works such as Justinian's *Institutes* or Gaius's *Institutes*, both of which address family relationships systematically.
Jurisdictional Note
GENER is a Roman civil law term and has no operative role in common law jurisdictions. In mixed jurisdictions with civil law foundations (Louisiana, Quebec, Scotland, South Africa), the underlying concept of the son-in-law's legal position in succession and family law may retain civil law coloring, but modern statutes in those jurisdictions use vernacular terminology rather than the Latin.