Hmm re-reading it I'm not so sure now!
"It goes over part of it" doesn't fit with that barrow as it is too far away.
Maybe you have found a reference to it!
PeteG
I think you've cracked it!
The barrow with the grid ref I gave is on Waylon hill.
The map shows that part of the hill with 3 names
Waden hill, Windmill Boll and Weedon Hill. http://peteglastonbury.ic24.net/Weedon.jpg
PeteG