Definition
Quaestus (also rendered "qujestus" in some historical transcriptions) is a Latin law term referring to an estate or property interest acquired by a person through their own act — by purchase, gift, or other means of acquisition — as distinguished from property that came to them by inheritance or descent. The term captures the distinction between what one obtains through one's own dealings and what one receives as a heritable successor to an ancestor.
The counterpart term is haereditas (hereditas), which denotes property received by descent through the bloodline. The paired concepts together formed a foundational division in classical and medieval property law: quaestus = acquired estate; hereditas = inherited estate.
Common Confusion
Quaestus is occasionally confused with quaesitum (something sought or the subject of inquiry) and with quaestor (a Roman fiscal official). These are etymologically related Latin roots but legally distinct concepts. Researchers encountering any of these terms in historical legal texts should not assume interchangeability. Additionally, the variant spelling "qujestus" appearing in some printed editions of Black's and other early sources is a typographical artifact of early modern printing conventions — the "j" substituting for "i" in certain typefaces — and refers to the same term.
Why It Matters in Research
This term appears almost exclusively in historical and ecclesiastical property law contexts. Researchers working in medieval English land law, early American property treatises, or canon law materials will encounter quaestus most often when sources are distinguishing rules of descent from rules governing acquired estates — for instance, in discussions of fee simple, fee tail, or the canons of inheritance.
The practical legal significance of the distinction was considerable: different rules historically governed how acquired property could be alienated or devised compared to ancestral or inherited property. Entail restrictions and family settlements often treated hereditary land differently from purchased land. A document that specifies quaestus may be signaling that the land in question is free from certain ancestral restrictions.
Modern legal research materials rarely use this term. If you encounter it in a primary source, the surrounding context will typically involve Glanvill, Bracton, or early common law treatises discussing the nature and incidents of land tenure. The Black's citation to Glanvill (lib. 7, c. 1) is a reliable anchor for tracing the concept in its original common law formulation.
Because the term does not appear in modern statutes or judicial opinions, it functions primarily as a reading tool for historical sources rather than as operative legal vocabulary. Researchers should treat it as a signal pointing to the acquired/inherited property distinction and follow that thread into the substantive doctrine at issue.
Historical Dictionary Support
Black's Law Dictionary (2nd Ed., Supplemental) provides the entry cleanly: quaestus is "that estate which a man has by acquisition or purchase, in contradistinction to 'haereditas,' which is what he has by descent," with the citation to Glanvill, lib. 7, c. 1. This is one of the few entries in Black's Supplemental that relies on a single classical source, which itself signals the term's status as technical Latin legal vocabulary of medieval origin rather than a working concept of modern common law.
No meaningful divergence among historical dictionaries has been identified for this term. Its meaning was stable and narrow. What historical sources do not address — and what researchers should supply from context — is how courts and treatise writers applied the distinction in specific doctrinal settings, such as dower rights, curtesy, and the alienability of entailed estates.
Jurisdictional Note
Quaestus as a term of art has no operative jurisdiction in modern U.S. or English law. Its relevance is confined to historical common law sources, primarily pre-1600 English legal materials and treatises drawing on Glanvill and Bracton.