William Courtenay, 9th Earl of Devon

The Earl of Devon
William Courtenay, 3rd Viscount Courtenay (c. 1768–1835), later 9th Earl of Devon, painted in 1793 aged 25. Miniature by Richard Cosway
Born(1768-07-30)July 30, 1768
Died26 May 1835 (aged 66)
PartnerWilliam Beckford
FatherWilliam Courtenay
RelativesWilliam Courtenay (grandfather)
Alexander Wedderburn (uncle)

William Courtenay, 9th Earl of Devon (30 July 1768 – 26 May 1835), styled Viscount Courtenay of Powderham from 1788 to 1831, was an English peer. The only son of William Courtenay, 2nd Viscount Courtenay and his wife Frances Clack, he became involved in a scandal after engaging in an affair with art collector William Thomas Beckford from boyhood when it was discovered and publicised by his uncle.