Could Godtric's Hollow be on Avalon?

[Judy]

No: HPFGUIDX 56348

Please forgive me if this was discussed before, but since there is a 
good chance Harry could end up visiting Godric's Hollow in Book Five 
or Six, it might do to ponder this a bit:
Has anyone made a suggestion as to the exact location of Godric's 
Hollow?
If you look at a map of England, Bristol (which Hagrid mentions 
flying over) and Surrey are in a straight line going slightly 
northwest to slightly southeast of London.  The problem is that 
Bristol is bang on the western shore of England.  If Hagrid flew the 
most direct route, it would make absolutely no sense to overfly 
Bristol unless he were coming from Wales, or Ireland, or much more 
interestingly, the legendary isle of Avalon, (if JKR nudged it's 
imaginary location a bit more south of the Isle of Man.)  If Godric's 
Hollow was indeed located on Avalon, then there are quite a few 
intriguing conjectures that could come of it. [Please note there are 
other speculative locations of Avalon, but many sources do place it 
somewhere out in St. George's Channel]
Flying to Surrey from anywhere else in England or Scotland one would 
miss Bristol entirely, unless, of course, there was a reason for 
stopping there...
Does anyone have any other ideas?

--Judy, who needs Book Five quite badly as now she has taken to 
hallucinating rather than speculating about what comes next.