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Gilbert Postelle

American man convicted of murder and executed

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 12, 2026
Entity authorityQ111901958
Source-derived summary

Gilbert Ray Postelle (June 22, 1986 – February 17, 2022) was an American mass murderer who was sentenced to death and executed for his involvement in a quadruple murder in Oklahoma. He was executed on February 17, 2022, by lethal injection.

Early life

Postelle was abandoned by his mother at a young age and later began using methamphetamine on a daily basis. Postelle was arrested at least eight times in Midwest City related to drug manufacturing and weapons complaints. His father, Earl Bradford "Brad" Postelle, had a 1996 drug conviction and, in 1999, was suspected of manufacturing methamphetamine in an old school bus behind his home. Brad Postelle was charged with endeavoring to manufacture meth and drug possession, but the charges later were dropped.

Crime

On May 30, 2005, Memorial Day, Postelle, his brother David Postelle, father Brad Postelle, and another man, Randall Wade Byus, shot and killed four people in a "blitz attack" at a home in Oklahoma City. The victims were Donnie Swindle, James Alderson, Terry Smith, and Amy Wright. Prior to the attack, Brad Postelle was involved in a motorcycle crash and was seriously injured, receiving a brain injury resulting in seizures. The shooting was motivated by Postelle's belief that Swindle was responsible for the motorcycle accident despite there being no evidence for his involvement.

Editorial summary

The public source identifies “Gilbert Postelle” as american man convicted of murder and executed. This brief keeps that definition visible, then builds a research path around Gilbert, Postelle and American.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—1986, 2022, 1996, 1999—that can be checked directly. The linked authority record independently contributes the date 1986-06-22. Its value is orientation rather than verdict, with Gilbert, Postelle and American providing the first useful test.
Editorial analysis

Why this record matters

A short description can identify a subject without explaining its stakes. For “Gilbert Postelle”, the useful work is to connect “american man convicted of murder and executed” to the records capable of establishing context and consequence.

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 Aug 12, 2026. The linked authority identifier is Q111901958. None of the 1 selected statements returned an explicit reference. The first chronological checks are 1986, 2022, 1996 and 1999.

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The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

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Source & attribution

This entry incorporates text from Gilbert Postelle” 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.