Coldrum

..the inhabitants of the villages around Coldrum once believed that a battle was fought there, and that a ‘Black Prince’ was buried in the chamber.

From ‘Notes on the Folklore and Legends Associated with the Kentish Megaliths, by John H. Evans, in Folklore, Vol. 57, No. 1. (Mar., 1946), p42.

‘The’ Black Prince (Edward, the son of Edward the Third) was married to ‘Joan of Kent’, and was buried in Canterbury Cathedral in 1376.