Definition
A Latin term meaning "on the journey" or "in the course of traveling." In English legal history, *itinere* appears most prominently in the phrase *in itinere* and in connection with the justices in eyre — circuit judges who traveled through the counties of medieval England to hear pleas and administer justice on behalf of the Crown.
As a standalone procedural term, *itinere* refers to an ancient writ by which the king commanded the justices in eyre to admit an attorney on behalf of a party for the defense of that party's liberty. The writ directed the traveling justices to receive and recognize the designated attorney in proceedings before them during their circuit.
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Common Confusion
The historical dictionaries reproduce this entry under *itinere* but the definition they provide — the writ commanding justices in eyre to admit an attorney — describes a discrete procedural instrument. Researchers should note that *itinere* as a Latin word simply means "journey" or "on the way," and its legal significance derives entirely from its association with eyre proceedings. The term should not be confused with *in limine* (at the threshold) or other Latin procedural phrases describing timing or posture in litigation. The eyre context is essential to understanding why the writ existed at all.
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Why It Matters in Research
This term is essentially a fossil — it belongs to the medieval English legal system and has no operative modern equivalent. Researchers encountering *itinere* in historical sources are almost certainly working with materials from the period of the general eyre, roughly the twelfth through fourteenth centuries, or with secondary literature describing that period.
Several research traps apply:
First, the historical dictionary entries reproduce a very compressed definition drawn from *Registrum Omnium Brevium* (Reg. Orig.), the register of original writs. Researchers who need to understand the writ in context should trace it to that primary source rather than rely on the dictionary gloss alone.
Second, *in itinere* also appears in common law property and tort doctrine in a different sense: goods or persons described as *in itinere* were "in transit," a status that affected questions of possession, risk of loss, and liability. This usage is analytically distinct from the eyre writ and persisted in Anglo-American law long after the eyre courts had disappeared. A researcher working in commercial or property law who encounters *in itinere* is almost certainly dealing with this transit sense, not the eyre writ.
Third, the justices in eyre themselves — the *justiciarii in itinere* — are the institutional anchor for the eyre writ usage. Understanding the term requires some familiarity with eyre procedure, the relationship between the traveling justices and local courts, and the Crown's role in authorizing representation before those courts.
Fourth, this term will not appear in modern statutory or case law. Its presence in a source is itself a signal about the age and character of that source.
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Historical Dictionary Support
Black's Law Dictionary and Rapalje & Lawrence give essentially identical entries, both citing *Registrum Omnium Brevium* at page 19 as the authority. Neither dictionary elaborates on the eyre system itself or distinguishes the transit meaning of *in itinere* from the eyre writ usage. The entries are faithful as far as they go but are stripped of the institutional context that makes the term intelligible.
Neither source flags the separate and more durable use of *in itinere* in property and commercial law contexts. For a term this historically bounded, the dictionary entries function as finding aids pointing toward the register of writs rather than as self-sufficient definitions. Researchers should treat them accordingly.
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Jurisdictional Note
The eyre writ use of *itinere* is specific to English legal history and has no equivalent in civil law or Scottish legal traditions. The transit meaning of *in itinere* crossed into American common law and appears in early American commercial cases, though it has largely been displaced by modern statutory frameworks governing goods in transit.
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