William Cavendish-Bentinck, 6th Duke of Portland

His Grace
The Duke of Portland
KG GCVO GCStJ TD PC DL
His Grace The Duke of Portland KG GCVO GCStJ TD PC DL
	The Duke of Portland, circa 1900.
Master of the Horse
	In office; 9 August 1886 – 11 August 1892
Monarch	Queen Victoria
Prime Minister	The Marquess of Salisbury
Preceded by	The Earl of Cork
Succeeded by	The Viscount Oxenbridge
	In office; 16 July 1895 – 4 December 1905
Monarchs	Queen Victoria; Edward VII;
Prime Minister	The Marquess of Salisbury; Arthur Balfour;
Preceded by	The Earl of Cork
Succeeded by	The Earl of Sefton
Personal details
Born	28 December 1857; Dunkeld, Perthshire, Scotland
Died	26 April 1943 (aged 85); Welbeck Abbey, Nottinghamshire, England
Party	Conservative
Spouse	Winifred Dallas-Yorke (m. 1889)
Children	Lady Victoria Erskine-Wemyss; William Cavendish-Bentinck, 7th Duke of Portland; Lord Francis Cavendish-Bentinck;

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William Arthur Charles Cavendish-Bentinck, 6th Duke of Portland, KG, GCVO, GCStJ, TD, PC, DL (28 December 1857 – 26 April 1943) was a British landowner, courtier, and Conservative politician. He notably served as Master of the Horse between 1886 and 1905.