William Cavendish 1st Duke of Devonshire & Mary Butler dau of James Butler, Duke of Ormonde 
William and Mary were married in a religious ceremony on October 26th, 1662. They had a son named William.
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Personal Details
William Cavendish 1st Duke of Devonshire
William was born on January 25th, 1641. He died at the age of 66 on August 18th, 1707.
Mary Butler dau of James Butler, Duke of Ormonde
Mary was born in 1642. She died at the age of 68 on July 31st, 1710.
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Children
William Cavendish 2nd Duke of Devonshire
William was born in 1673 in Hardwick, Derbyshire, England. He died at the age of 56 on January 4th, 1729 in London, Middlesex, England, Great Britain.