The Roman Map of Britain Dunio Pedretis Ham Hill (aka Hamdon Hill), Montacute, Somerset

Omire tedertis (R&C 25) next
Dounion Dunium (Ptolemy II 3 13) a polis of the Durotriges

The River Parret was Pedredistrem 725. 

Ham Hill (st4717)

HAMDON HILL CAMP Old Scheduled Monument Number SO100 348271 116585

Dinnington ST4012 is southwest of Ham Hill on the Fosse Way. Recorded as Dinni-, Dunitone 1086, which CDEPN suggests may be for Dunin- based on OE duning 'hill'. Dinnington could just as easily be based on Dunio.