this is what I did find on ancestry.com: The official history of Elbert County, 1790-1935 it has some info on Genealogy and he is in there in a small section.
A Volume of memoirs and genealogy of representative citizens of the city of Seattle and county of King, Washington
Mentions that he addmitted a Mr. HEart to the bar. I guess he was a lawyer?
Civil War Pension Index: General Index to Pension Files, 1861-1934
These have not only civil war but also spanish american war and etc. He is in it with widow being Mary L. Fortson.
-------------------------- That was it from that. Here is a couple of suggestions. Often times the local libary has books or the historical socities. Uath has one for Utah and Minnesota has a few so I am sure Washington has some. you might want to try a local College. Search words would be things like, Spanish American war, Philippine insurrection, Philippine war. You may have to play with a few topics to get the right combo or spelling. Philippines or Filipino etc. There is not much, I know I just did a report on it for a College class.