I don't know if this will help. Research by my great uncle, William Joseph Latty (d.1988) reveals a William Wilfred (or Walter) Latty - Battle creek, enlisted Chicago in Company 'H' Illinois Infantry, Aug 10th, 1861, discharged Sept. 22nd, 1862, disabled. Research ends there, but other information refers to Edward James Latty, who lived on Sark (one of the Channel Islands) and probably grew cabbages. It appears that he came from N.France, probably Brittany, and later sailed his own 3 masted ship, the Marie Jeanne, which was wrecked at Devil's Cove, Portland (Dorset, England). He married a Weymouth girl. This may tie in with the Somerset/Dorset Latty's mentioned elsewhere in the genealogy forum.