William Cavendish, 1st Duke of Devonshire, Duke of Devonshire, Marquis of Hartington, Earl of Devonshire, was born 25 January 1640 to William Cavendish, 3rd Earl of Devonshire (1617-1684) and Elizabeth Cecil (1619-1689) and died 18 August 1707 at Picadilly in Devonshire House, London, Greater London, England, United Kingdom of unspecified causes. He married Mary Butler (1646-1710) 26 October 1662 in County Tipperary, Ireland. Notable ancestors include William I of England (1027-1087), Charlemagne (747-814), Hugh Capet (c940-996), Alfred the Great (849-899), Rurik (c832-879), Henry II of England (1133-1189). Ancestors are from the United Kingdom, France, Germany, England, Russia, Ukraine, Spain, Portugal, Belgium, Israel, Hungary, the Netherlands, Ireland, Belarus, Italy, Turkey.


Offspring of William Cavendish, 1st Duke of Devonshire and Mary Butler (1646-1710)
Name Birth Death Joined with
Elizabeth Cavendish (c1670-1741)
William Cavendish, 2nd Duke of Devonshire (1672-1729) 1672 4 June 1729 London, Greater London, England, United Kingdom Rachel Russell (1674-1725)

Henry Cavendish (c1673-1700)
James Cavendish (c1675-1751)

Footnotes (including sources)

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