Becca,
I do not believe I have any special information that would help locate the soldier's grave, but I am willing to try.
Do you have a specific question or clue for the gravesite?
See if any of these links might help.
http://www.srttexas.org/glinks.html
If there is some sort of master list of graves or special research for final resting places of Texian soldiers, I am not aware of it. As a matter of fact, I have been searching the past two years for a soldier who died in service in 1836.
Joe