This is a fairly simple multi.
You will find an information there.
A. How many letters are Fred's surname?
B. How many letters are in the second word of the fifth line on the plaque?
C. The first digit of Fred's year of death.
D. How many letters are in the second word of the sixth line on the plaque?
E. How many letters are in the sixth word of the bottom line on the plaque?
F. The second digit of _ _ _ _ trees.
S 35 07.ABC
E 138 28.DEF
Checksum 13+9
Happy Hunting.
Rod81W, Briana the explorer and Sharyn1981