rock house lydbrook (General)
The one at GL17 9PP is the one I found but the one in Bell Lane is GL17 9SA. Both very close together. Maybe the first post code is a mistake as the other is clearly correct from the pictures you found. May be relevant that they are both close to a building that used to be a pub but I can't identify it. Maybe it was the Prince of Wales that George's father ran?
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Peter