Background
Sonia Rosemary Keppel was born on 24 May 1900, as the youngest child of The Honorary George Keppel (1865–1947), who was the son of William Keppel, 7th Earl of Albemarle and his wife Sophia Mary Keppel (née MacNab).
Sonia Rosemary Keppel was born on 24 May 1900, as the youngest child of The Honorary George Keppel (1865–1947), who was the son of William Keppel, 7th Earl of Albemarle and his wife Sophia Mary Keppel (née MacNab).
Rosalind Maud Cubitt, maternal grandmother of Camilla, Duchess of Cornwall. Sonia"s mother was Alice Frederica Keppel (née Edmonstone) (1868–1947), who was the youngest child of Sir William Edmonstone, 4th Baronet and became a mistress of King Edward VII. Her only sibling was the English writer and socialite Violet Trefusis (née Keppel) (1894–1972). m. m. Sonia died on 16 August 1986, aged 86, having long suffered from osteoporosis.
Her youngest son Jeremy predeceased her in 1958.
She became Patron of the charity in 1997 and was appointed President in 2001. In 1958, Sonia wrote her memoir entitled The Edwardian daughter, in which she described what her childhood was like in the high-society of the Edwardian era.
Her granddaughter Camilla, Duchess of Cornwall, became a member of the National Osteoporosis Society (the only United Kingdom-wide charity dedicated to improving the diagnosis, prevention and treatment of osteoporosis) in 1994 to help raise awareness of the disease.