Laura Spencer-Churchill, Duchess of Marlborough

Frances Laura Spencer-Churchill, Duchess of Marlborough (10 August 1915 – 19 February 1990) was a British noblewoman and socialite. She was variously Viscountess Long, Countess of Dudley and became Duchess of Marlborough upon her fourth marriage to John Spencer-Churchill, 10th Duke of Marlborough. She was the sister of novelist Hugo Charteris and Ann Charteris who married Ian Fleming, as well as the granddaughter of Hugo Charteris, 11th Earl of Wemyss). Her third husband, Michael Temple Canfield, was the former husband of Lee Radziwill, sister of Jacqueline Kennedy Onassis. During World War II, she served as an auxiliary nurse.

Frances Laura Charteris was born on 10 August 1915 at London, England to Guy Lawrence Charteris and Frances Lucy Tennant, daughter of a Scottish chemical merchant. Laura, as she was called, had 3 siblings, Ann, Mary Rose and Hugo. Their mother died of cancer in 1925 and the remainder of their childhood was spent shuffling between homes in London and family in Scotland, where their grandparents, the Earl and Countess of Wemyss lived. During World War II, she served as an auxiliary nurse for the Royal Navy.

On 14 November 1933, at St. Margaret's Church, Westminster, London, England, she married Walter Francis David Long, 2nd Viscount Long. He was the son of Brigadier-General Walter Long and Sibell Vanden-Bempde-Johnstone. During her marriage she was the Viscountess Laura Long. Laura's only child, (Antoinette) Sara Francis Sibell Long (born 9 Aug 1934) was the product of this union. The couple divorced in 1942.

Laura then married, William Humble Eric Ward, 3rd Earl of Dudley, son of William Humble Ward, 2nd Earl of Dudley and Rachel Gurney, on 23 February 1943. She was known as Laura Countess of Dudley until she and Ward divorced in 1954.

On 13 June 1960, Laura married Michael Temple Canfield, rumored to have been the son of Prince George, Duke of Kent and American Alice “Kiki” Gwynne Preston. Canfield was adopted as an infant by Cass Canfield, head of Harper and Row Publishing house with his wife Katharine Emmet. Michael Canfield was the previous husband of Lee Radziwill, Jackie Kennedy's younger sister.

Her last husband was John Albert William Spencer-Churchill, 10th Duke of Marlborough, whom she married six weeks before his death in 1972. From the time of this marriage, she became known as Laura, Duchess of Marlborough.

Laura died on 19 February 1990 at age 74 at Portman Towers, Marylebone, London, England.

In 1980, she published her autobiography, Laughter from a Cloud. London: Weidenfeld and Nicolson, 1980 (ISBN 978-0-297-77739-7)