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Sheridan Hamilton-Temple-Blackwood, 5th Marquess of Dufferin and Ava

British noble

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJun 20, 2026
Entity authorityQ7494889 ↗
Source-derived summary

Sheridan Frederick Terence Hamilton-Temple-Blackwood, 5th Marquess of Dufferin and Ava (9 July 1938 – 29 May 1988) was a British patron of the arts. Less formally, he was usually called Sheridan Dufferin.

Childhood and inheritance

Born into an Anglo-Irish aristocratic family from Ulster, he was the youngest child and only son of Basil Hamilton-Temple-Blackwood, 4th Marquess of Dufferin and Ava and his wife Maureen Guinness (daughter of The Honourable Arthur Ernest Guinness, second son of Edward Guinness, 1st Earl of Iveagh). One of his sisters was the novelist Lady Caroline Blackwood.

Named after his playwright ancestor Richard Brinsley Sheridan, Lord Dufferin was known by his father's courtesy title Earl of Ava until he succeeded his father in the marquessate in 1945, when he was only six years old. When he was aged 12, trustees acting in his name sold Clandeboye, his ancestral seat, to his estates' company for £120,000 in order "to maintain his station in life", as the trustees allegedly said at the time.

After attending the day school Garth House in Bangor, County Down, he went to Eton College. After Eton, he attended Christ Church, Oxford. A keen shot and sportsman, he played championship tennis at the Queen's Club, but it was at Oxford that he developed a passion for the arts.

Patron of the arts

After Oxford, he met and went into partnership with John Kasmin, and opened the Kasmin Gallery on New Bond Street, London in 1963.

Editorial summary

Begin with the source’s own compact description: “Sheridan Hamilton-Temple-Blackwood, 5th Marquess of Dufferin and Ava” is british noble. The dossier treats that line as a proposition to test through Sheridan, Hamilton-Temple-Blackwood and Marquess, not as a finished interpretation.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1938, 1988, 1945, 1963—that can be checked directly. The linked authority record independently contributes the date 1938-07-09. For this dossier, Sheridan, Hamilton-Temple-Blackwood and Marquess is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “british noble” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jun 20, 2026. The linked authority identifier is Q7494889. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1938, 1988, 1945 and 1963.

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Source & attribution

This entry incorporates text from “Sheridan Hamilton-Temple-Blackwood, 5th Marquess of Dufferin and Ava” 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.