Lady Flora was one of the daughters of Francis Rawdon-Hastings, 1st Marquess of Hastings (1754–1826) and his wife Flora Mure-Campbell (1780–1840). Her siblings were George , Sophia , Selina, and Adelaide.
Flora CAMPBELL (1743? - 1831) Flora Muir CAMPBELL (1780 - 1840) ; Countess of LOUDON Francis Isherwood CAMPBELL (Penn. 1820 - 1887 Kansas) Freelove CAMPBELL (1777 - 1850) Gavin CAMPBELL (1st Marquess of BREADALBANE) (1851 - 1922) ; K.G.; Lord Steward of the Household, etc. George CAMPBELL; of Stevenson or Ducathall George (of Loudoun) CAMPBELL