Definition
A Law French phrase meaning "beyond the sea." In historical English law, ouster le mer was a recognized excuse — technically an essoign — that could be pleaded when a person who had been summoned to appear in court failed to attend because they were physically absent from the realm. Being overseas was treated as a lawful impediment to appearance, and a party properly essoigned on this ground was granted a postponement rather than suffering default judgment for non-appearance.
The term belongs to the body of doctrine governing essoigns (formal excuses for non-appearance), which operated as procedural safeguards in the common law courts of medieval and early modern England. Ouster le mer was among the more significant essoigns because absence beyond the sea was both difficult to disprove and genuinely beyond a party's ready control.
Common Confusion
Ouster le mer should not be confused with the unrelated modern legal term "ouster," which refers to the wrongful dispossession of a person from real property or the unlawful exclusion of a co-tenant or officer from possession or office. The two terms share a root word but are entirely distinct concepts from different areas of law and different historical periods. A researcher encountering "ouster" in a modern source is almost certainly reading about dispossession; the phrase "ouster le mer" will appear only in historical English common law contexts.
The phrase also appears in older sources as outre meer — Burrill notes this as an earlier form — and researchers should treat both spellings as referring to the same legal concept.
Why It Matters in Research
Ouster le mer is a term of historical English procedural law with no surviving operational significance in modern American or English courts. Researchers encountering it will do so almost exclusively in:
- Pre-19th century English treatises and Year Books discussing essoign practice
- Editions of Littleton's Tenures and commentaries upon it (Burrill cites Littleton § 677 as primary authority)
- Cowell's Interpreter, which all four source dictionaries cite directly or indirectly as the definitional authority
- Bracton and related medieval common law texts
The procedural system of essoigns, of which ouster le mer was a part, was gradually dismantled by English procedural reforms and is entirely absent from American common law inheritance as a functioning doctrine. When this phrase appears in primary source research, it is a reliable marker that the document is engaging with English common law procedure prior to the 19th century reforms, which helps date and contextualize the source.
Researchers working in feudal land tenure or real actions (as opposed to personal actions) should note that essoign rules, including ouster le mer, applied with particular force in those proceedings. The connection to Littleton means the term will surface in any deep engagement with Coke on Littleton as well.
Historical Dictionary Support
All four source dictionaries are in close agreement on the core definition: a Law French phrase meaning "beyond the sea," functioning as an excuse for non-appearance when summoned to court. The entry is stable across editions and compilers, with no meaningful divergence on substance.
Black's (both editions) and Rapalje & Lawrence each attribute the definition to Cowell — a reference to John Cowell's The Interpreter (1607), an early English legal dictionary that was itself a primary authority on Law French terms. Burrill adds the reference to Littleton § 677 and notes the older spelling outre meer, providing the most complete bibliographic anchor of the four.
What none of the historical dictionaries develop is the broader doctrine of essoigns within which ouster le mer operated — the procedural mechanics, the limits on how many times the excuse could be invoked, or its relationship to other recognized essoigns such as illness. Researchers should not rely on these dictionary entries alone to understand the doctrine; they function as definitional signposts pointing toward Littleton, Cowell, and Bracton rather than as self-contained expositions.
Jurisdictional Note
Ouster le mer is exclusively a term of historical English common law. It was never adopted as a functioning doctrine in American courts, which inherited English common law selectively and never imported the medieval essoign system in operative form.