Wikipedia
Lady of the Bedchamber
The Lady of the Bedchamber is the title of the person holding the official position of personal attendant on a British queen or princess. The position is traditionally held by a female member of a noble family.
In 1839, concerns that Queen Victoria was determined to surround herself with wives of Whig politicians led to the bedchamber crisis, preventing the installation of a Tory government under Robert Peel.
This is an incomplete list of those who have served as Lady of the Bedchamber (also styled Gentlewoman of Her Majesty's Bedchamber) in the British Royal Household. See also Ladies-in-Waiting, Women of the Bedchamber and Mistress of the Robes.