The cache is not at the posted coordinates, but is within 1 mile, and will bring you to an interesting historical site. The posted coordinates bring you to the Foster Curra plot, in the First Parish Cemetery in York Village. You will need to visit the posted coordinates and complete a simple field puzzle.
The oldest William in the Foster Curra plot was born in the year 18AB and died in 194C.
To find the final, subtract .0AB from the north coordinate, and .00C from the west coordinate.
Please note that the cemetery is *off limits* at night. Please seek this cache only during daylight hours.