This article shows how: Diana, Princess of Wales; Sarah, Duchess of York; and Camilla, Duchess of Cornwall — all are cousins, descending from Charles II, King of England.
| Charles (1630-1685) II, King of England, Scotland and Ireland (1660-85) | ||
| Charles Lennox (1672-1723), 1st Duke of Richmond | ||
| Anne Lennox (1703-89), Countess of Albemarle | ||
| Elizabeth Keppel (1739-68), Marchioness of Tavistock | George van Keppel (1724-72), 3rd Earl of Albemarle | |
| John Russell (1766-1839), Duke of Bedford | William Charles Keppel (1772-1849), 4th Earl of Albemarle | |
| Louisa Jane (1812-1905), Lady Russell | George Thomas Keppel (b. 1799), 6th Earl of Albemarle | |
| James Hamilton (1838-1913), 2nd Duke of Abercorn | Louisa Jane Hamilton (1836-1912) | William Coutts Keppel (b. 1832), 7th Earl of Albemarle |
| James Albert Edward Hamilton (1869-1953), 3rd Duke of Abercorn | Herbert Montagu-Douglas-Scott (1872-1944) | George Keppel (1865-1947) |
| Cynthia Elinor Beatrix (1897-1972), Lady Hamilton | Marian Montagu-Douglas-Scott (1908-96) | Sonia Rosemary Keppel (b. 1900) |
| Edward John (1924-92), 8th Earl Spencer 1975- | Major Ronald Ivor Ferguson (1931-2003) | Rosalind Maud Cubitt (b. 1921) |
| Diana Frances Spencer (1961-97), Princess of Wales | Sarah Margaret Ferguson (b. 1959), Duchess of York | Camilla Rosemary Shand (b. 1947), Duchess of Cornwall |