Sentence:  Pampedun, or Pandon, was probably a place of residence from the earliest times; its sheltered situation for boats, and proximity to the ancient way over the river, protected perhaps by a <WSD>"dun</WSD>" or "camp", on the height above [...] possibly gave origin to the ancient name of the place, Pampedun, from the British "pant", a "hollow", and <WSD>"dun</WSD>", a "fort" or "camp", "Pant-y-dun". 
Meaning of the word marked with <WSD> tags:  (fort) An ancient or medieval fortification; "especially" a hill-fort in Scotland or Ireland.