Definition
A Law French term meaning "to take" or "to take hold of." In medieval English land law, *seiser* denotes the act of taking possession of freehold land — the physical, affirmative act by which seisin was acquired or resumed. The term appears most commonly in the compound phrase *seiser et tener* ("to take and hold"), which captures the two-part nature of feudal land possession: the initial taking and the continuing tenure that followed. As a term of art, seiser names the act; seisin names the resulting legal state.
Common Language
Modern common usage (Wiktionary): Marked as an obsolete form of *seizer* — one who seizes.
Historical common usage (Webster's 1913): Not separately entered; subsumed under *seize* and its derivatives, carrying the general sense of taking forcible or sudden possession of something.
The gap matters. In ordinary English, "seizer" carries a connotation of forcible or hostile taking. In its feudal legal context, *seiser* is neutral — it describes a lawful act of entering into possession of land, not wrongful dispossession. A lord putting a tenant into seisin, a reversioner resuming possession after a term, or an heir entering upon inheritance all *seiser* in the legal sense, without any implication of wrongdoing.
Common Confusion
Seiser is frequently run together with *disseiser* (one who wrongfully dispossesses another of seisin) or confused with the general English *seize* (to confiscate or take by force). The legal term is strictly about the act of taking feudal possession — it is the mechanism of acquiring seisin, not disturbing it. Researchers encountering *seiser* in medieval plea rolls or treatises should resist reading modern connotations of coercion or wrongfulness into the term.
Why It Matters in Research
*Seiser* is a narrow procedural and descriptive term. Researchers will encounter it almost exclusively in medieval and early modern sources — Year Books, Bracton, Britton, Glanvill, and early plea rolls — and in the historical law dictionaries that drew on those sources. By the time of Blackstone and the systematic common law treatises of the eighteenth century, the term had largely been absorbed into the broader vocabulary of seisin and entry without separate use.
The practical trap: when searching Law Mind corpus sources for discussions of how seisin was *acquired*, this term may not appear even when the concept is fully present. Authors writing in English rather than Law French will use "taking seisin," "entry," or "investiture" to describe the same act. *Seiser* is the Law French label for a concept that continues in English legal vocabulary under different names.
The compound *seiser et tener* is the more frequently useful search string. It marks passages dealing with the formal requirements of feudal possession — both the act of entry and the ongoing tenure — and appears in contexts discussing the completeness of a possessory claim. A party who had *seised* but not yet *tenuit* (held) might occupy an uncertain legal position relevant to questions of novel disseisin, mort d'ancestor, and related assizes.
Jurisdictional variation is not a meaningful consideration here; this is a term of historical English land law with no active modern application.
Historical Dictionary Support
Burrill's entry is terse: "L. Fr. To take; to take hold of. *Seiser et tener*; to take and hold. Britt. c. 40." The citation to Britton (a late thirteenth-century law French treatise) confirms the term's deep medieval provenance. Burrill does not elaborate further, treating *seiser* as definitionally dependent on the reader's familiarity with the law of seisin — reasonable for a nineteenth-century practitioner audience but thin for modern researchers.
What the historical dictionaries collectively miss is any sustained discussion of the act-versus-state distinction. *Seiser* is the act; *seisin* is the state produced by the act. This distinction has real doctrinal weight: many feudal land disputes turned on whether seisin had been *completed* — whether the taking had ripened into holding — and the vocabulary of *seiser et tener* is precisely the language in which that question was framed. Later dictionaries (Tomlin, Black) largely abandon the term as an independent entry, folding it into seisin discussions without preserving the act/state distinction the Law French usage maintained.