SomersetCache Mystery Cache

A puzzle cache in a growing series based around caching user names. The cache is not at the indicated location - derive the hiding place from the information below.

In the case of multiple answers, use the lowest number - also ignore any tens, e.g. 10=0, 11=1, etc.

The cache can be found at:

N51 2(Evelyn) . (Charles+Edward)(Charles)(John)
W000 4(Francis+John) . (Webb)(Evelyn-Edward)(Charles)