Frances Ruth Shand Kydd (previously Spencer, née Roche; 20 January 1936 – 3 June 2004) was the mother of Diana, Princess of Wales.

Following her divorce from Viscount Althorp in 1969, and Diana's death in 1997, Shand Kydd devoted the final years of her life to Catholic charity work following her conversion to Catholicism.

"[6] Her marriage to Viscount Althorp was not a happy one and, in 1967, she left him to be with Peter Shand Kydd, an heir to a wallpaper fortune in Australia, whom she had met the year before.

[8] Frances and Peter Shand Kydd were married on 2 May 1969 and lived on the Scottish island of Seil, where they bought an 18th-century farmhouse called Ardencaple,[9] 10 kilometres from Oban.

[3] In October 2002, when Frances left her Scottish home to give testimony at the trial of Diana's former butler, Paul Burrell, burglars targeted her house and stole her jewellery.

[21][22] Her funeral at St Columba's Cathedral in Oban on 10 June was attended by her children, sister and grandchildren, including princes William (who gave a reading) and Harry.

[23][24] Their father, her former son-in-law, Prince Charles, did not attend because he was travelling to Washington to represent the Royal Family at the state funeral of the former US President Ronald Reagan the following day.