Arthur Capell, 1. Earl of Essex Ehe und Kinder
Arthur Capell married Lady Elizabeth Percy, daughter of Algernon Percy, 10th Earl of Northumberland and Lady Anne Cecil, by whom he had children:
- Algernon Capell, 2nd Earl of Essex (1670–1710), only son and heir, who succeeded him in the earldom.
- Lady Anne Capell, wife of Charles Howard, 3rd Earl of Carlisle.