Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
DENNE
As described in historical dictionaries
Patronymica Britannica (1860)
DENNE. An ancient Kentish family deduced from Robert de Dene, butler (2)incerna) to Edw. the Confessor. He is said to have been a Norman, though the surname is English, and is doubtless derived from West Dean, co. Sussex. Sussex Arch. Coll. V. 157.
Surname type: Location or geographical feature
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English