Cache is at: N57 07.(2xE)B(4xC) W002 06.D(A-C)0
The listed coordinates above take you to stage one.
Stage 1: This famous Strathspey King was born in 184A
Stage 2: The wife of architect Mr Devlin died in 19XY, B= X+Y
Stage 3: The most common digit in the date at the top of Stewart's grave = C
Stage 4: The co-discoverer of insulin died in March 193D
Stage 5: The number of fingers holding the scroll = E