Air Commandant Dame Lena Annette Jean Conan Doyle, Lady Bromet, DBE, AE, WRAF, ADC was best-known as Jean Conan Doyle. The second daughter of Sir Arthur Conan Doyle, she served for thirty years in the WRAF, where she worked in intelligence during World War II and by the time of her retirement she had attained the rank of Air Commandant, the highest rank in the Women's Royal Air Force. Until 1966 she served as an honorary Aide-de-Camp to Queen Elizabeth II. She was styled as Lady Bromet after marrying Air Vice-Marshal Sir Geoffrey Rhodes Bromet (1891 1983). Her husband served a term as Lieutenant-Governor of the Isle of Man. Sir Geoffrey and Lady Jean Bromet had no children. After the death of her brother, Adrian Conan Doyle, in 1970, Dame Jean became her father's literary executor and the legal copyright holder to some of the rights to the Sherlock Holmes character as well as her father's other works. She assiduously defended Sherlock Holmes' character