Rokeingham, Rokingham
In the English Arthour and Merlin, the site of the decisive battle between Arthur and the kings who rebelled against him.
The Vulgate Merlin places this fight at the forest of Bedegraine. The similarity of Rockingham and “Brekenham,” a variation of Bedegraine, may have contributed to the confusion. Arthour also places a battle between King Clarion and the Saxons in the forest of Rockingham.
Source
Arthour and Merlin | Late 13th century