Loelia Ponsonby is Bond's shared personal secretary in many of the Bond novels. She is also the secretary for 008 and 0011, both of whom share an office with Bond. She retires and is replaced in On Her Majesty's Secret Service by Mary Goodnight after she marries a member of the Baltic Exchange. For the films, her flirtatious relationship with Bond is transferred to and replaced by Miss Moneypenny. Ponsonby nearly made an appearance in GoldenEye, but she was removed from the final draft, instead making he first appearance in the video game First Light as Principal Secretary of MI6. Because Ponsonby had never appeared in the movies and other games and only appeared in the novels, many people had confused her with Judi Dench's M due to her authoritative personality.
The name of the character may be based on the Duchess of Westminster of the same name.