Definition
A ferryman; one who transports passengers across a body of water for hire. The term is a Latin term of medieval legal origin used in English common law sources to designate the operator of a ferry service — a person who undertakes, for compensation, to carry passengers over a river, strait, or other waterway by boat.
Common Confusion
Passiagiarius (ferryman, carrier of passengers by water) should not be conflated with the term passenger, though the two are etymologically related and historically linked. The passiagiarius is the operator; the passenger is the person carried. Historical legal texts sometimes use the Latin root in contexts that can blur this distinction, particularly in fragments or digest-form summaries. The Rapalje & Lawrence source excerpt illustrates this risk, moving between discussion of the carrier's role and the rights and conduct of passengers within a single passage.
Why It Matters in Research
Researchers will encounter this term almost exclusively in Latin-form legal texts, early English common law records, and glossaries drawing on Jacob's Law Dictionary. It is a rare term even in historical sources, appearing mainly as a one-word gloss in legal dictionaries rather than as a working term in pleadings or statutes. Its primary research value is definitional: when the word surfaces in a historical document, it identifies the legal actor as a ferryman, which then connects to a body of common law duties imposed on common carriers of passengers.
The ferryman's legal obligations were substantial. Under common law, a passiagiarius was treated as a common carrier of persons and therefore held to a high duty of care. This matters for corpus navigation: a document mentioning a passiagiarius may be operating within the law of carriers, bailment, or early tort frameworks — not merely a neutral description of an occupation. Researchers following this term into 19th-century American case law should pivot to the passenger carrier line of authority, where the Latin term no longer appears but the underlying legal relationship is extensively developed.
Note that the Black's Law Dictionary (2nd Ed.) source fragment reproduced under this term appears to be a misalignment in the underlying text — the passage discusses the legal definition of a passenger and carrier liability cases, not the term passiagiarius itself. This is a common artifact in historical dictionary digitization, where entries bleed across page breaks. Researchers should treat that material as background context for the carrier relationship rather than a direct gloss on the Latin term.
Historical Dictionary Support
The historical dictionaries consulted are in agreement on the core meaning: Bouvier's and Black's (1st Ed.) both cite Jacob and define passiagiarius simply as "a ferryman." No substantive divergence exists among sources on the basic definition.
Rapalje & Lawrence's entry, though fragmentary in the reproduced text, gestures toward the broader legal framework the term inhabits — voyage, carriage by vessel, and the duties and rewards associated with maritime transport. This situates passiagiarius within a wider carrier law context that the bare one-word definitions in Bouvier's and Black's do not supply.
What the historical dictionaries collectively miss: none provides meaningful discussion of the passiagiarius's legal duties, liability exposure, or the relationship between this term and the developing common carrier doctrine. The term functions in these dictionaries purely as a Latin-to-English translation entry. Researchers needing the substantive law must move beyond the dictionary entry to treatises on carriers and the passenger cases that defined duty of care through the 19th century.