William Augustus Fawkener

William Augustus Fawkener (c.1750–1811) was a British civil servant and diplomat.

William Fawkener was one of the sons of Sir Everard Fawkener, a merchant and then British Ambassador to the Ottoman Empire, who did not marry until he was aged 53, and thus died in 1758 while William was still young. His mother was Harriet daughter of Lieutenant General Charles Churchill. William was probably named in honour of the Duke of Cumberland, and served as a page of honour at the Duke's funeral in 1765.

His brother Everard also became a civil servant, holding the post of a Commissioner of Stamps from 1783 to 1803, obtained through William's influence.

William was appointed a Clerk of the Privy Council in 1779. He held this post until at least 1795.

During his service to the Privy Council, he was employed on various diplomatic missions. In 1783 he was appointed as secretary of the embassy to the Marquess of Carmarthen, who was appointed ambassador to France, but was instead appointed Foreign Secretary before he departed. In April 1787, he was Envoy Extraordinary to the Grand Duchy of Tuscany. In October 1787, he was sent as an envoy to Portugal to negotiate a commercial treaty in conjunction with Robert Walpole, the Minister resident there.

In 1791, he was sent on a secret mission to Catherine II of Russia.

Details of his later career are unclear.

For a period, he worked as the secretary of William Windham, the secretary for war and the colonies. He was sent letters from British subjects living and working in Haiti from 1806 to 1807.

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