And why not the River Avon , Well, I think Eric Hemery is right when, in the pages of High Dartmoor, he quotes a moorman who suggests that Aune or Auna should be the name of this pretty river, given that there are lots of Avons and only one Aune.So let’s call it Aune on Dartmoor, though it might be the Avon as it winds a gentler course through the South Hams. afon in Wales