One way of looking for a location is to search old newspapers. There are several mentions of The Fence, near St Briavels, in the British Newspaper Archive (a subscription site – although it can be free-searched for the basic details) but none give a definitive idea.

Another way is to search old maps. This map, from the National Library of Scotland, shows a place called The Fence about a mile north-west of St Briavels. Look in the bottom left hand corner just to the right of Slip Wood. St Briavels is on the next map south.

http://maps.nls.uk/view/101453649

The name has survived to this day since putting it into Streetmap will also find it.

I don’t think there are any on-line records of UK civil actions. However, this link to the UK National Archives might be helpful.

http://www.nationalarchives.gov.uk/help-with-your-research/research-guides/civil-litiga...