George Spencer, 4th Duke of Marlborough,, styled Marquess of Blandford until 1758, was a British courtier and politician from the Spencer family. He served as Lord Chamberlain between 1762 and 1763 an
Portrait attributed to Sir Joshua Reynolds, 1768
4th Duke of Marlborough, Duchess of Marlborough and their family by Sir Joshua Reynolds, c.1777-78
Caroline Spencer, Duchess of Marlborough, formerly Lady Caroline Russell, was the wife of George Spencer, 4th Duke of Marlborough.
George Spencer, 4th Duke of Marlborough
…The Duke was made a Knight of the Garter in 1768, and was elected to the Royal Society in 1786. Marlborough married Lady Caroline Russell (1743–1811), daughter of John Russell, 4th Duke of Bedford, in 1762, by whom he had eight children: Lady Caroline Spencer (1763–1813), married Henry…
Caroline, Duchess of Marlborough, by Sir Joshua Reynolds