The posted coordinates will take you to the headstone of Henry Druery. I've searched on foot and online and as far as I can tell, this headstone marks the oldest grave in Flomaton Cemetery. Mr. Druery not only was buried before anyone else atop this hill, but he also was born before anyone else in this cemetery.
The final stage for this multi-cache is located at N31 0A.BCD W087 1E.FGH.
To calculate the coordinates for the final, you will need to gather some information from the headstone at Mr. Druery's grave.
A: The 2nd digit in the day of his death.
B: The number of letters in the 2nd word on the 2nd line of text.
C: The 2nd digit in the year of his birth.
D: The 2nd digit in the year of his death.
E: The number of letters in the 2nd word on the 1st line of text.
F: The 1st digit in the day of his death.
G: The number of times the letter 'e' appears on the headstone.
H: The number of letters in his country of birth.