When he was 15, his parents were killed in an air crash in California in 1938. Plunket succeeded to the family peerage (created in 1827) as 7th Baron Plunket. He and his brothers were raised by their aunt, the Hon. Helen Rhodes, and her husband. He was educated at Eton College and the University of Cambridge. and later served as an officer in the Irish Guards during World War II with the rank of captain.
He enjoyed a close friendship with Queen Elizabeth II, he has been described 'the nearest thing to a brother to the Queen'.[6] In 1961, he became godfather to Princess Margaret's son Viscount Linley.[7] On 8 September 1957, he was promoted to the rank of major and later to the rank of lieutenant-colonel on 8 April 1969. On 3 January 1973, Plunket lent his family tiara to the Queen when hers broke en route to the “Fanfare for Europe” gala at the Royal Opera House in Covent Garden.[citation needed]
Unmarried, Plunket died of cancer on 28 May 1975 at the age of 51. The Queen unusually attended both his funeral at the Chapel Royal, St James's Palace and his memorial service at the Guards' Chapel.[1] He is buried in the Royal Burial Ground at Frogmore, the royal family's private graveyard in the Home Park near Windsor Castle. Apparently, Lord Plunket is the only person buried at the Royal Burial Ground who is not related through blood or marriage to the royal family.[8]
^ abcdBedell Smith, Sally (14 February 2012). "Her Majesty's A-Team". The Telegraph. Retrieved 9 February 2024.
^Dorothé Lewis's paternity was revealed by the 7th Marquess's granddaughter Lady Annabel Goldsmith in her memoirs, "Annabel: An Unconventional Life." She specifically discusses Lord Londonderry's reaction to the death of his illegitimate daughter's first husband, the accidental death of Dorothe and her second husband Teddy Plunket, and the effective treatment of her sons by Plunket as first cousins, pages 22-23.