William Cavendish, 4th Duke of Devonshire

William Cavendish, 4th Duke of Devonshire,, styled Lord Cavendish before 1729, and Marquess of Hartington between 1729 and 1755, was a British Whig statesman and nobleman who was briefly nominal Prime Minister of Great Britain. He was the first son of William Cavendish, 3rd Duke of Devonshire and his wife, Catherine Hoskins. He is also a great-great-great-great-great-grandfather of King Charles III through the king's maternal great-grandmother.

8 May 1720

Born on the same birth day (8 May): Adolphe-Basile Routhier • Ali Hassan Mwinyi • Andrea Alciato • Arthur Q. Bryan • Bertalan Székely • Edward Tompkins • Heino Heinrich Graf von Flemming • James Traficant • Jean Giraud • Ludvig Karsten • Melissa Gilbert • Nathaniel Dance-Holland • Rick Zombo • Ricky Nelson • Stephen Furst • Ted Sorensen • Thomas Pynchon

Born in the same month (May 1720): Maximilian Hell