Definition
Agisters (also spelled agistors; singular: agister or agistor) are persons who take in and care for the livestock of others for compensation. The agister receives animals — typically horses, cattle, or other grazing stock — onto their land or premises and assumes responsibility for their keep, feeding, and general management during the period of care. In return, the agister receives payment, usually calculated by the head or by the time period.
At common law, the term also referred to specific officers appointed to oversee the management of cattle and other animals within royal forests or commons, responsible for collecting fees (agistment) for the privilege of grazing on those lands.
Common Language
Modern common usage (Wiktionary): Plural of agister; no independent entry — the term is treated as technical vocabulary with no general lay meaning.
Historical common usage (Webster's 1913): Webster's 1913 defines agister as one who agists, i.e., takes in cattle to pasture at a certain rate.
The term carries no meaningful divergence between its historical common and legal senses — both point to the same livestock-boarding function. The legal significance lies not in a gap between lay and legal meaning, but in the legal consequences that attach: agisters occupy a distinct position in the law of bailment and, historically, enjoyed a specific lien on animals in their possession for unpaid care charges.
Recognized Forms
/SUBTYPES
Two recognized senses appear in historical sources:
1. Private agisters: Individuals operating a commercial arrangement, taking in another's livestock for a fee. This is the sense most relevant to bailment law and agister's lien doctrine.
2. Forest or common agisters (gist-takers): Officers of the Crown or manor charged with managing the agistment of royal forests or common lands — collecting fees from commoners who grazed animals on those lands and policing the terms of the grazing right. This sense is largely obsolete outside historical research contexts.
Why It Matters in Research
Researchers will encounter agisters primarily in two distinct legal contexts, and conflating them produces significant navigational errors.
The first and more practically durable context is bailment and lien law. The agister is a species of bailee for hire, and the legal rules governing their duties — standard of care, liability for loss or injury to animals, and the right to retain animals until fees are paid — developed through common law and were later codified in many American jurisdictions under agister's lien statutes. When researching livestock disputes, feed-yard liability, or agricultural liens, the path runs through agister's lien materials, not through older forest-law sources.
The second context is English commons and forest law, where gist-takers were royal officers. This usage dominates in older English legal history materials and can mislead researchers who encounter the term in pre-nineteenth-century English sources. Williams on Commons (cited in Black's) addresses this officer-function sense; it is essentially irrelevant to American practice.
American statutory treatment of the agister's lien varies considerably. Many states enacted express lien statutes to cure the gap in the common law — at common law, the agister's lien was disputed or denied in a number of jurisdictions because the agister was not considered to improve the chattel but merely to maintain it, unlike an artisan's lien. Researchers tracing lien priority disputes in agricultural law should check whether the governing jurisdiction had a statutory agister's lien and when it was enacted, because the common law baseline in that state may have been unfavorable to the agister.
In historical sources, spelling varies: agister, agistor, agisters, agistors, and even the older gist-taker. Index searches that rely on a single spelling will miss relevant material.
Historical Dictionary Support
Black's Law Dictionary collapses both senses into a single short entry — "officers appointed to look after cattle, etc." — citing Williams on Common, page 232. This framing privileges the forest-law officer sense and understates the significance of the private bailee sense that dominates American legal practice.
The entry's brevity reflects the term's relative obscurity in formal legal doctrine, but it should not be read as indicating that agisters are legally inconsequential. The agister's lien, which Black's treats separately, is where the substantive legal content lives in American law. The dictionary entry for AGISTERS is therefore best understood as a pointer; researchers should follow immediately to agistment and agister's lien entries to find actionable doctrine.
Historical dictionaries generally agree on the core meaning — livestock care for compensation — but diverge on emphasis: English sources foreground the commons-officer role, while American sources center the commercial bailment relationship.
Jurisdictional Note
American jurisdictions diverge significantly on whether an agister holds a possessory lien at common law. Some states recognized the lien by analogy to innkeeper or stable-keeper doctrine; others denied it absent statute. Most American jurisdictions have addressed this gap through agricultural or livestock lien statutes, but the scope, priority, and perfection requirements of those statutes vary. Research should begin with the specific state's lien statute rather than assuming a uniform common law baseline.