She was born after nine years of childless marriage between William Cavendish, 5th Duke of Devonshire and his wife Lady Georgiana Spencer, the political hostess and socialite.
As such, she was a member of one of the country's grandest and richest families.
In 1801, the young Georgiana married George Howard, Viscount Morpeth, later becoming Countess of Carlisle upon her husband's accession in 1825.
Their twelve children included the 7th and 8th Earls of Carlisle.
Another child, the Duchess of Sutherland, was Mistress of the Robes and a close friend to Queen Victoria.