Sir Watkin Williams-Wynn, 4th Baronet

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Portrait of Sir Watkin Williams-Wynn and his mother, by Sir Joshua Reynolds, ca. 1768

Sir Watkin Williams-Wynn, 4th Baronet (23 September 1749 – 24 July 1789) was a Welsh politician and patron of the arts.


Williams-Wynn was the eldest son of the second marriage of his father, Sir Watkin Williams-Wynn, 3rd Baronet, to Frances Shackerley of Cheshire. He was a baby when his father was killed by a fall from his horse while out hunting, and inherited the extensive Wynnstay estates. On his coming of age in 1770, he held an extravagant party for 15,000 guests. An embroidered suit which he may have worn on this occasion is in the possession of the National Museum of Wales.[1]

20 St James's Square

Sir Watkin commissioned Robert Adam to build 20-21 St James's Square in London which was constructed between 1771 and 1775.

Sir Watkin was Member of Parliament (MP) for Shropshire from 1772 to 1774, and for Denbighshire from 1774 to 1789. He was Lord Lieutenant of Merionethshire from 1775-1789.


He was married twice, first to Henrietta Somerset, who died shortly afterwards, and in December 1771 to Charlotte Grenville. He had three sons and two daughters from this second marriage. Sir Joshua Reynolds painted a portrait of him with his first wife in theatrical costume, and another of his second wife with her children, in around 1778.[citation needed]



Parliament of Great Britain
Preceded by
Richard Lyster
Charles Baldwyn
Member of Parliament for Shropshire
With: Charles Baldwyn
Succeeded by
Noel Hill
Charles Baldwyn
Preceded by
Sir Lynch Cotton, Bt.
Member of Parliament for Denbighshire
Succeeded by
Robert Watkin Wynne
Honorary titles
Preceded by
William Vaughan
Lord Lieutenant of Merionethshire
Succeeded by
Watkin Williams
Baronetage of England
Preceded by
Watkin Williams-Wynn
(of Gray's Inn)
Succeeded by
Watkin Williams-Wynn