Sarah Lennox, Duchess of Richmond (née Cadogan; 18 September 1705 – 25 August 1751), was Lady of the Bedchamber to Queen Caroline from 1724 to 1737.

[1] She was brought up in a convent and at the age of fourteen was married, on 4 December 1719, to Charles Lennox, Earl of March, at The Hague.

[4] She received a salary of £500 per year but, despite the fact that the post represented the highest possible position at court, she would have carried out mundane duties, including ordering meals and clothes and dispatching servants to run errands.

[3] Sarah was one of the twenty-one "ladies of quality and distinction" who signed Thomas Coram's first petition, presented to George II in 1735, calling for the foundation of the Foundling Hospital.

They arranged the shells into elaborate patterns that were incorporated into a grotto in the park of the family's home in Sussex, Goodwood House.