The brother of Robert Were Fox the Younger (July 25^th) and Mariana Fox (1807–1863) who was the mother of the famous mountaineer Francis Fox Tuckett, he was also the uncle of Caroline Fox (May 24^th), the brother of Alfred Fox (September 9^th) and the uncle of Barclay Fox (July 24^th).  His niece, Caroline Fox, founded The Royal Cornwall Polytechnic Society (April 22^nd) at Falmouth and Charles was its President (1871–72). He was also President of the Royal Geological Society of Cornwall (February 11^th) from 1863 until 1867.  He is, however, best known for his development of Trebah Gardens and Polgwidden Cove, the adjacent estate to Alfred’s Glendurgan Gardens.
Under Fox’s ownership Trebah Gardens’ twenty six acres were developed into a sub-tropical environment with hundreds of oaks and elms planted to protect it from the wind.