William Cavendish, 3rd Earl of Devonshire (1617-1684)

William Cavendish, 3rd Earl of Devonshire (c. 10 October 1617 – 23 November 1684) was the son of William Cavendish, 2nd Earl of Devonshire.

He married Lady Elizabeth Cecil, daughter of William Cecil, 2nd Earl of Salisbury, on 4 March 1639. They had two children:


 * William Cavendish, 1st Duke of Devonshire (1641–1707)
 * Lady Anne Cavendish (c. 1660–?), married John Cecil, 5th Earl of Exeter and had issue.