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Williams v. Florida

United States Supreme Court case

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionMay 1, 2026
Entity authorityQ8021122 ↗
Source-derived summary

Williams v. Florida, 399 U.S. 78 (1970), is a United States Supreme Court case in which the Court held that the Fifth Amendment does not entitle a defendant in a criminal trial to refuse to provide pre-trial notice of some details of his alibi witnesses to the prosecution, and that the Sixth Amendment does not require a jury to have 12 members.

Background

Williams had been convicted of robbery in Florida and sentenced to life imprisonment. Williams's defense had been alibi, and Florida law required him to notify the prosecution, in advance of the trial, of the names of his alibi witnesses, so that the prosecution could try to obtain rebuttal evidence. Williams argued that the requirement to assist the prosecution in this way violated his Fifth Amendment right not to incriminate himself.

Also, in 1967 Florida had reduced the number of jurors in all non-capital cases from 12 to 6, and so Williams had been convicted by a jury of six. Williams argued that the Sixth Amendment not only guaranteed the right to a jury trial, but also required that a jury must have all the characteristics it had under the common law, including that it consist of 12 persons.

The Florida District Court of Appeal ruled against Williams on both issues. The Florida Supreme Court did not have jurisdiction to hear the case, and in 1969 the US Supreme Court agreed to hear the case.

Opinion of the Court

The Court held that Florida's notice-of-alibi rule did not violate the Fifth Amendment.

Editorial summary

“Williams v. Florida” enters the record as united States Supreme Court case. Crown Archives preserves that source wording while asking what Williams, Florida and United can confirm, complicate or overturn.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—1970, 1967, 1969—that can be checked directly. The linked authority record independently contributes the date 1970-06-22. Its strongest next move is a source search built around Williams, Florida and United.
Editorial analysis

Why this record matters

“Williams v. Florida” is worth following because a concise public description often conceals a longer documentary argument. Here, Williams, Florida and United provides the most credible route into that argument.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated May 1, 2026. The linked authority identifier is Q8021122. None of the 1 selected statements returned an explicit reference. The first chronological checks are 1970, 1967 and 1969.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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  1. Establish the record: confirm the title “Williams v. Florida”, its source revision and the description used here.
  2. Expand the search: follow Williams v. Florida primary sources, Williams v. Florida archive and Williams research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

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Source & attribution

This entry incorporates text from “Williams v. Florida” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.