"Burbage ('the burh by a stream'), Pewsey ('Pefe's eg or island'), Avebury ('burh by the river Avon'), Heytesbury ('Heahthryths burh'), Hazelbury (hazel burh or beorg 'hill'), Sherston ('stone on a steep slope'), and Upavon (river name), as well as one of Wiltshire's boroughs, Marlborough ('Maerla's burial place' [beorg, but not of a hill]),

to quote from an anglo saxon article... 6th century settlement A/S Avebury, is pretty early, there is a very strong overlay of naming round these places, Calne and Bedwyn are British stream names, as is of course Avon. Chippenham (Cippa's meadow) and Reinbold the priest who held Avebury also held Pewsey as well, the church is on a hill....Sweet's reader gives Dun = hill/mountain. Waed(ae spelt in that funny way) could be to do with water.

Thought I'd add that to the discussion ;) all these 17th century people could'nt spelll