William Walked Here Multi-Cache

This cache was placed to coincide with new university students (freshers) arriving, and hopefully joining ArcSoc! This has been placed as part of a 'Geocaching trail - learn about Winchester' day where hopefully new and old students alike can learn more about Winchester, and maybe take up geocaching as a result! Of course anyone can grab these caches! 

This is my first multi so hopefully it won't be too hard! It is a nano cache.
When you reach stage one there is a plaque on the wall the first set of dates are ABCD and the second are EFGH.

You need to go to N C1 (A-E)(H-C).(D-E)(B-A)(B-C)  W (A-E)(B-H)E AH.B(C-A)(H+E), this is another virtual stage where you will find four boards giving you information and some very important history of Winchester.

Here you will work out for co-ordinates for the final location, you need to find the information on the information boards- the date date St Swithun died is ABC. Wine, the first bishop, was appointed in DEF. King Alfred was buried in Old Minster in GHI. In JKLM the Bishop Walkelin begun work on the east end and the transepts of the Cathedral. 
The final location is at N (B-J)(I-G) (E-D)(M-B).D(C+J)L  W (B-E)KJ (M-G)A.M(B-J)(E-J).