Definition
A high officer of the English Crown responsible for custody and use of the Great Seal of England, through whose hands passed all royal charters, grants, commissions, and other instruments requiring authentication under the Great Seal before they could take legal effect. The full title is Lord Keeper of the Great Seal.
The office was one of the most powerful in English government, carrying judicial, administrative, and ceremonial functions. The Lord Keeper presided over the Court of Chancery, advised the Crown, and held a seat on the Privy Council by virtue of the office. The Great Seal itself was physically delivered to the Lord Keeper upon appointment, and its custody was both a practical responsibility and the formal source of the office's authority.
By the Statute of 5 Elizabeth c. 18, the authority of the Lord Keeper was declared identical to that of the Lord Chancellor, and the two offices were thereafter consolidated in practice and eventually in law. Today the functions are exercised by the Lord Chancellor, whose full historic title remains Lord High Chancellor of Great Britain.
Common Confusion
The Lord Keeper and the Lord Chancellor are frequently treated as interchangeable in historical sources, and after 5 Eliz. c. 18 they were functionally equivalent, but they were not always the same office. A researcher encountering a document sealed or certified by a Lord Keeper rather than a Lord Chancellor should not assume error or informality — appointment to one rather than the other often reflected political considerations of the moment. The distinction matters when tracking the provenance of royal instruments or the judicial history of the Court of Chancery.
Why It Matters in Research
This term belongs almost entirely to the pre-modern English constitutional framework and will appear in Law Mind sources primarily in historical context: constitutional histories, treatises on equity jurisdiction, and discussions of the Court of Chancery's origins. Researchers working in early English equity, royal grants of property or privilege, or the history of the English legal profession will encounter it frequently.
Several navigational traps are worth flagging. First, the office's consolidation with the Lord Chancellorship was gradual and not always clean in practice — sources from the Tudor and early Stuart periods may use both titles inconsistently or interchangeably even before formal unification. Second, because the Great Seal authenticated royal instruments, the identity of the Keeper at a given moment can matter for dating and validating historical documents; a charter's legal force might hinge on whether it passed through the correct hands under the correct seal. Third, American legal sources inherited the vocabulary of equity from English chancery practice, so references to the Lord Keeper in American treatises on equity are almost always historical borrowings rather than references to any domestic officer.
No American equivalent exists at the federal level, though some states historically designated a Secretary of State or similar officer as keeper of the state seal. Those positions are distinct in character and should not be conflated with the English office.
Historical Dictionary Support
Black's and Bouvier's agree on the essential description: a high officer of state through whose hands pass all charters, grants, and commissions under the Great Seal, with the office consolidated with the Lord Chancellorship by 5 Eliz. c. 18. Bouvier's adds the useful clarification that appointment was made by the physical delivery of the Great Seal — a ceremonial act that was also the legal mechanism of investiture — and explicitly notes the officer's membership in the Privy Council by virtue of the office.
Both entries truncate without reaching the post-consolidation history, which leaves a gap for researchers. The practical outcome of 5 Eliz. c. 18 was that appointing monarchs could choose to name either a Lord Chancellor or a Lord Keeper without any difference in legal effect, a flexibility that was exercised regularly through the seventeenth century. Neither dictionary addresses the eventual absorption of the separate title or the modern position of the Lord Chancellor under the Constitutional Reform Act 2005, which substantially altered the judicial dimensions of that office — matters beyond their historical scope but relevant to researchers tracing the office's full arc.
Jurisdictional Note
This is an English office with no direct American counterpart. It appears in American legal sources only in the context of equity jurisprudence history or colonial-era documents, where English royal grants and commissions passing under the Great Seal may be at issue. Researchers working with colonial land grants or charters should be alert to the Keeper's role in authenticating those instruments.