==Family==Cavendish married Lady Mary Butler (1646–1710), daughter of James Butler, 1st Duke of Ormonde and his wife, Lady Elizabeth Preston, on 26 October 1662. ###>== Mariage et descendance ==Il épouse Lady Mary Butler (1646–1710), fille de James Butler, d'Ormonde et de sa femme, Lady Elizabeth Preston, le 26 octobre 1662.