John Spencer-Churchill, 7th Duke of Marlborough

His Grace
The Duke of Marlborough
KG PC
His Grace The Duke of Marlborough KG PC
Lord Lieutenant of Ireland
	In office; 11 December 1876 – 21 April 1880
Monarch	Victoria
Prime Minister	Benjamin Disraeli
Preceded by	The Duke of Abercorn
Succeeded by	The Earl Cowper
Lord President of the Council
	In office; 8 March 1867 – 9 December 1868
Monarch	Victoria
Prime Minister	Benjamin Disraeli
Preceded by	The Duke of Buckingham and Chandos
Succeeded by	The Earl de Grey and Ripon
Member of the House of Lords
	Lord Temporal
	In office; 1 July 1857 – 4 July 1883
Preceded by	George Spencer-Churchill, 6th Duke of Marlborough
Succeeded by	George Spencer-Churchill, 8th Duke of Marlborough
Personal details
Born	2 June 1822; Garboldisham Hall, Garboldisham, Norfolk, England
Died	4 July 1883 (aged 61); Berkeley Square, Mayfair, London, England
Party	Conservative
Spouse	Lady Frances Vane (m. 1843)
Children	George Spencer-Churchill, 8th Duke of Marlborough; Lord Frederick Spencer-Churchill; Cornelia Guest, Baroness Wimborne; Rosamund Fellowes, Baroness de Ramsey; Lord Randolph Churchill; Fanny Marjoribanks, Baroness Tweedmouth; Anne Innes-Ker, Duchess of Roxburghe; Lord Charles Spencer-Churchill; Lord Augustus Spencer-Churchill; Georgiana Curzon, Countess Howe; Lady Sarah Wilson;
Parents	George Spencer-Churchill, 6th Duke of Marlborough; Lady Jane Stewart;
Alma mater	Oriel College, Oxford

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John Winston Spencer-Churchill, 7th Duke of Marlborough (2 June 1822 – 4 July 1883), styled Earl of Sunderland from 1822 to 1840 and Marquess of Blandford from 1840 to 1857, was a British Conservative cabinet minister, politician, peer, and nobleman. He was the paternal grandfather of Prime Minister Sir Winston Churchill.