Nailsea's industrial heritage was largely based on glassmaking. An old cauldron, rescued from the former Nailsea Glassworks after it closed, has been kept to remind shoppers of the past.
To find the cache, locate the plaque beside the cauldron at the given co-ordinates, and obtain the following information:
1) The year in which the Glassworks closed = 1A7B.
2) The number of letters in Peter's surname = C.
3) The year in which Ivor died = DE01.
The cache (a black nano) is located a short walk away at:
N 51 26.(C-B)E(B+D) W 002 45.DD(A-B).
Congratulations to Team Mojo 100 and campervandude for their joint FTF 
.