"Am I correct in assuming that he and this brother Wade are buried in the Fort DeRussy cemetery?"

Possibly, but not necessarily. When William and Wade Pratt died (early March 1863) the hospital for the soldiers at Fort DeRussy was at Marksville, about three miles from the fort. (It had originally been at Barbin's Landing, at the fort, but when the hospital went under water during the high water in January, it was moved). The building still stands, and the hospital was on the second floor, so I could put you within a few feet of where the Pratt brothers died, but where they were buried is another question. They may have been brought back to the fort for burial there, or they may have been buried in one of the Marksville cemeteries. Best bets would be the Fort DeRussy Cemetery or the old Cushman Cemetery in Marksville, which is the closest Protestant cemetery to the hospital site. But I've never found anything that specifies where the soldiers were buried. A year or two ago, descendants of another 1st Texas Sharpshooter who died in the hospital about the same time as the Pratt brothers had a VA marker placed for him in the Fort DeRussy Cemetery, but there is no hard evidence that the men were buried there.

I would like your opinion on a related matter. William and Wade Pratt are both listed in Appendix D (Casualties) of "Earthen Walls, Iron Men: Fort DeRussy, Louisiana and the Defense of Red River" (University of Tennesee Press, 2007). One reviewer (in "Civil War News", Feb-Mar 2008) thought that the inclusion of these men's names showed poor judgment on the author's part. I'd like to know if you agree with the review. Do you think that your great-great-grandfather's death is "trivial" and "irrelevant to the story" of Fort DeRussy? Do you think that the mention of his death "burdens and bores readers"? Do you think that the listing of your g-g-grandfather's name in an appendix, along with the names of all the other men who died, were injured, or captured, "detracts from the overall quality of the book"? I'd like an honest opinion.