In 1922 Cecilie and her sisters were bridesmaids at the wedding of their uncle Lord Louis Mountbatten (later Earl Mountbatten of Burma) to Edwina Ashley.
Burma | Louis Mountbatten, 1st Earl Mountbatten of Burma | Princess Margaret, Countess of Snowdon | Burma Railway | Sophie, Countess of Wessex | Tamu, Burma | Edwina Currie | The Fauna of British India, Including Ceylon and Burma | Burma Campaign | Mission of Burma | Mary, Princess Royal and Countess of Harewood | Burma Road | Princess Maud, Countess of Southesk | Princess Alice, Countess of Athlone | Margaret Pole, Countess of Salisbury | Frances Hyde, Countess of Clarendon | Countess of Wessex | Burma (Myanmar) | Bago, Burma | Louis Mountbatten | High Court (Burma) | Edwina Mountbatten, Countess Mountbatten of Burma | Countess Elisabeth Dobržensky de Dobrženicz | Selina Hastings, Countess of Huntingdon | Mountbatten | Margaret Howard, Countess of Nottingham | Magway, Burma | Louise Mountbatten | Hedwig of France, Countess of Nevers | Frances Carr, Countess of Somerset |
His granddaughter was Hon. Edwina Ashley, later Lady Mountbatten (1901–1960), whose two daughters Patricia, Countess Mountbatten of Burma (b. 1924) and Lady Pamela Hicks (b. 1929) are still living as of 2013.
It was inherited by Edwina, Lady Mountbatten (when she was still officially styled as Lady Louis Mountbatten), in 1939 who, with her husband Admiral of the Fleet The 1st Earl Mountbatten of Burma, made a number of improvements, installing electricity and a mains water supply.
His daughter, the Honourable Edwina, wife of Lord Louis Mountbatten, inherited Broadlands.