Caroline Amelia Fox was the daughter of General Henry Edward Fox (1755-1811) and Marianne Clayton (c.1763-1808). Henry Fox was a British Army officer and colonial administrator who served as the governor of Minorca (1799-1801) before taking the position of Lieutenant Governor in Gibraltar, (1801-1803). Subsequently the family moved to Ireland, then England before moving back to Gibraltar (17th Dec 1804-June 1806). Marianne Clayton was the daughter of William Clayton, MP, of Harleyford Manor, and sister of William Clayton, 4th Baronet and Catherine, Lady Howard de Walden. They had 3 children:
• Louisa Amelia Fox (d. 1828), later wife of Major-General Sir Henry Bunbury
• Caroline Amelia Fox (d. 1868), who married Major-General William Napier
• Henry Stephen Fox (1791-1846), later the UK’s envoy-extraordinary and minister-plenipotentiary to the United States of America
In 1812 Caroline married her cousin; Sir William Francis Patrick Napier (1785-1860). He was a British general and historian who fought in the Napoleonic Wars, particularly in the Peninsular War in Spain and Portugal. William wrote the popular History of the War in the Peninsula…, 6 vol. (1828-40), based partly on his own combat experiences and partly on information supplied by two commanders in that conflict, the Duke of Wellington, and the French Marshal Nicolas-Jean de Dieu Soult.