Frances Erskine Inglis, later the Marchioness Calderón de la Barca, died in Madrid on February 6, 1882, aged seventy-seven. Her final years were closely connected with Spain's royal household. After accompanying the Infanta Isabel during her period outside Spain, she returned to the palace in 1875 as a lady-in-waiting, and received her title in 1877. These appointments locate her later life but do not establish the state of her health immediately before death. The consulted biography gives no dependable cause, treatment history, or duration of a terminal illness. Her famous letters about Mexico describe an earlier chapter and should not be made into evidence of her final medical condition in Madrid. The supported account is a death in the city where she spent her later royal service, with final symptoms, attendants, and private farewells left unverified.