Mercy Doddridge (26 August 1734-October 1809) was the middle of the three surviving daughters of Mercy and Philip Doddridge. She never married, living with her mother and sister, Celia, in Tewkesbury after the marriage of her elder sister, Mary, in 1759; she later became a friend of the novelist Elizabeth Hamilton and died at Bath. John Humphreys writes of her that she "possessed great comprehension of mind and solidity of judgment, and consequently evinced a total freedom from prejudice, and extensive information, qualities which rendered her society highly instructive and pleasing" (Diary and Correspondence, vol. 5, p. 534).