Definition
Non molestando (Latin: "for not molesting") was a writ available in English common law to a person who had been granted the king's protection and was subsequently molested or disturbed in violation of that protection. The writ provided a formal legal remedy against the party causing the molestation, invoking the crown's authority to enforce the peace it had explicitly extended.
The term functions both as the name of the writ and as a shorthand reference to the underlying legal principle: that a person sheltered under royal protection could not lawfully be interfered with, and that interference gave rise to a specific judicial remedy.
Common Confusion
Non molestando should not be confused with modern non-molestation orders, which are creatures of statute in contemporary English family law (primarily under the Family Law Act 1996) and have no historical or doctrinal connection to this writ. The shared root word ("molestation," meaning harmful interference or disturbance) can mislead researchers into treating the two as related instruments. They are not. The modern non-molestation order is a domestic abuse remedy; the historical writ of non molestando was a crown-prerogative instrument tied to royal protection grants, operative in a legal world that no longer exists.
Why It Matters in Research
This is an obsolete writ with no operational survival in modern law. Researchers encountering non molestando in primary sources will find it almost exclusively in pre-19th-century English pleading records, register books, and writs compilations — most notably the Registrum Omnium Brevium (Reg. Orig.), which is the source cited by all four historical dictionaries in the Law Mind corpus.
The key research traps are two:
First, keyword confusion. Searching for "non molestando" or variants in a corpus that includes modern employment and family law materials will surface false positives. The Latin phrase does not appear in modern legal instruments, but words derived from the same root do. Researchers should constrain searches to pre-modern sources when investigating this writ specifically.
Second, the writ is a dependent instrument — it presupposes the existence of a royal protection grant. Any research into non molestando must therefore also engage with the broader history of letters of protection and the crown's prerogative to extend special peace to individuals (merchants, travelers, litigants, returning soldiers). The writ cannot be understood in isolation from that framework.
For Law Mind corpus researchers, this term surfaces most naturally in historical procedure materials, medieval and early modern English legal history, and discussions of prerogative writs. It has no meaningful doctrinal connection to the encyclopedia entries flagged in the matching results (non-compete, non-solicitation, and non-disclosure agreements), which share only a superficial linguistic resemblance.
Historical Dictionary Support
All four historical dictionaries in the Law Mind corpus — Black's (1st ed.), Black's (2nd ed.), Rapalje & Lawrence, and Bouvier — define non molestando in essentially identical terms: a writ available to one molested contrary to the king's protection. This unanimity reflects the writ's fixed historical character; it was not a living, evolving instrument by the time these dictionaries were compiled, so there is no meaningful divergence to flag.
The shared citation to "Reg. Orig. 184" (Registrum Omnium Brevium, or Register of Original Writs) is notable. This register was a working catalog of available writs in the English common law courts, and its citation across all sources confirms that non molestando had an established, standardized form rather than being an ad hoc remedy.
Bouvier adds a secondary citation to Cowel (John Cowell's Interpreter, 1607), a law dictionary that treated many archaic and Latin legal terms. This cross-reference situates the writ in the glossarial tradition of early modern English legal lexicography and confirms its pre-common-law-reform pedigree.
One thing the historical dictionaries do not supply: any substantive discussion of how the writ was pleaded, what constituted "molestation" for purposes of triggering it, or what the procedural consequences of issuance were. Researchers needing that level of detail must go directly to the Registrum Omnium Brevium and to secondary historical scholarship on prerogative writs.
Also worth noting: both Black's editions append the unrelated maxim "Non nasci, et natum mori, paria sunt" (Not to be born, and to be dead-born, are the same) immediately after the non molestando entry. This is a typographic artifact of the original dictionary layout — a maxim that begins with "Non" following immediately after a "Non" entry — and has no legal or conceptual connection to the writ.
Jurisdictional Note
Non molestando was exclusively an English common law writ rooted in royal prerogative. It did not transplant into American law, which inherited the common law writ system selectively and discarded instruments tied to the English crown's personal authority. Researchers should not expect to find this writ in American court records at any period.