X Mark's the Spot Mystery Cache

There is nothing to see at the given coordinates, please do not go there.

This cache is named for my ex-husband, without whom I would never have the time to go out hunting for treasure.  Solve the puzzle and identify who else could have had the honour to be my ex-husband, if only they'd had the opportunity.

You are looking for a nano in a camo bag.

N51 2P.QRS W000 2T.UVW

P = F of E

Q = G of C

R = T of A

S = G of B

T = T of G/2

U = M of C

V = T of D -T of F

W = F of A