The Hon. Joan Barbara Yarde-Buller (22 April 1908 – 25 April 1997), also known in her three marriages as Joan Guinness, Princess Taj-ud-dawlah Aga Khan, and Viscountess Camrose, was an English socialite, one of the Bright Young Things.
Joan Barbara Yarde-Buller was born on 22 April 1908.
She was the eldest of six children born to John Yarde-Buller, 3rd Baron Churston, the aide-de-camp to the Viceroy of India, and Denise Orme, a former music hall singer.
1927
On 4 July 1927, Joan married Loel Guinness, at St Margaret's, Westminster in London.
Guinness, a British Conservative Member of Parliament, was the only son of Irish lawyer Benjamin Seymour Guinness (of the Guinness brewing family), and his first wife, Bridget Henrietta Frances Williams-Bulkeley.
They had one son:
1928
After her parents divorce in 1928, her mother married Danish diplomat Tito Wessel.
They too divorced and Denise married Edward FitzGerald, 7th Duke of Leinster.
Her father was the only son of John Yarde-Buller, 2nd Baron Churston and Barbara Yelverton (herself the only child of Sir Hastings Yelverton and the 20th Baroness Grey de Ruthyn).
1936
A few days after the divorce from Guinness was effective, on 18 May 1936, in Paris, Joan Yarde-Buller married Prince Aly Khan.
Before the wedding, Yarde-Buller converted to Islam and took the name "Taj-ud-dawlah", meaning "Crown of the Realm".
Yarde-Buller and Khan had two sons:
1948
Joan left Guinness for Prince Aly Khan, the eldest son of the Aga Khan III, the 48th Imam of the Nizari Ismailis, and Guinness successfully sued Joan and Khan on grounds of adultery.
Joan and Khan did not defend the charges and the judge, Justice Bucknill, granted Guinness a decree nisi and full custody of their son and ordered Khan to pay court costs.
1949
They divorced in 1949 and the Prince later married Rita Hayworth.
1986
In March 1986, Joan married lastly Seymour Berry, 2nd Viscount Camrose, a newspaper magnate.
They had been friends for more than thirty years.
They lived at Hackwood Park, the Camrose home in Hampshire.
1995
After his death in 1995, she was known as the Dowager Viscountess Camrose, also known as Joan, Viscountess Camrose.
2013
Among her siblings were brother, Richard Yarde-Buller, who became the 4th Baron Churston; sister Lydia Yarde-Buller, who became The Duchess of Bedford (wife of Ian Russell, 13th Duke of Bedford); and Primrose Yarde-Buller, who became the Countess Cadogan (wife of William Cadogan, 7th Earl Cadogan).
