Definition
Pars enitia (also rendered pars enitia, from the Law French l'eigne part, meaning "the eldest's part") is a term of old English law denoting the share or portion assigned to the eldest daughter in a partition of lands among co-heiresses. When a man died leaving multiple daughters as his heirs, and the inherited land was to be divided, the eldest daughter held the privilege of having her share set off first — and, crucially, it was she who made the division, while the other sisters then chose their portions by lot. The eldest thus bore the burden and the benefit of allocation: she divided equitably to avoid disadvantage to herself, since the others chose before she received what remained.
Burrill notes the equivalent Law French form as l'eigne part, and cross-references the related concept of æsnetia, the broader privilege of the eldest-born in such arrangements.
Common Confusion
Pars enitia is sometimes conflated with two neighboring concepts. First, æsnetia (or esnecy) refers to the broader privilege of the eldest co-heiress in the context of partition generally, of which pars enitia is essentially the specific application to the portion itself. Second, Burrill's entry places in proximity the concept of rationabilis pars — the "reasonable part" of a man's goods secured to his wife and children under Magna Carta — which is an entirely distinct doctrine governing personal estate, not real property partition among daughters. Rapalje and Lawrence also situate pars gravata (a party aggrieved) adjacent to pars enitia without connection; the proximity is alphabetical only.
Why It Matters in Research
Pars enitia is a term of narrow historical scope, relevant almost exclusively to research in pre-modern English land law, inheritance practice, and the legal position of women as co-heiresses before the consolidation of modern succession statutes. Researchers will encounter it most often in:
— Treatises on feudal tenure and inheritance, particularly discussions of coparcenary, the form of co-ownership that arose when daughters inherited together in the absence of male heirs.
— Historical commentaries on Magna Carta, where the concept of rationabilis pars appears nearby and can cause conflation in secondary sources.
— Early equity and common law cases involving disputed partitions among female heirs.
The term has no living application in modern law. It was obsolete as operative doctrine well before the 19th century, rendered moot first by equitable partition practice and ultimately by statutory inheritance reform. Researchers encountering it in historical sources should treat it as a marker of pre-modern coparcenary context rather than a term with continuing doctrinal significance.
A navigational trap: Rapalje and Lawrence's entry redirects to ENITIA PARS rather than treating pars enitia as the primary form, while Black's and Burrill's treat pars enitia as the headword. When searching historical dictionaries, check both forms.
Historical Dictionary Support
All three source dictionaries converge on the core definition — the portion of the eldest daughter in a partition by lot — with no meaningful substantive disagreement. The variation is presentational.
Black's gives the leanest entry, confirming the term as old English law without elaboration. Rapalje and Lawrence redirect to the inverted form (enitia pars) and add only the adjacently listed pars gravata, suggesting the editors treated this as a minor cross-reference entry.
Burrill provides the fullest treatment. His addition of the Law French equivalent l'eigne part is genuinely useful for researchers tracing the term across linguistic registers in medieval sources. His cross-reference to æsnetia anchors the term in its conceptual family. His secondary note about rationabilis pars — with a direct citation to 2 Blackstone's Commentaries 492 and Magna Carta — is contextually placed but pertains to a separate doctrine and can mislead if read inattentively.
What the historical dictionaries collectively omit: any procedural detail about how the lot system actually operated, the relationship to coparcenary tenure as a distinct form of co-ownership, or the equity court practice that eventually displaced partition by lot. Researchers needing that context must go to Blackstone's Commentaries (Book 2) and Littleton's Tenures directly.
Jurisdictional Note
Pars enitia is a doctrine of English common law with no native American development. Colonial American jurisdictions that inherited English common law principles did so in modified form, and partition among co-heiresses by lot was not transplanted as a formal mechanism. The term appears in American legal dictionaries as historical reference only.