Diego's Letter

Years ago a letter was discovered about an individual that history had forgotten. A brief discussion occurred when I was in grade school about the man called Captain Diego Ramon. His name was in reference to early Texas history. My only interest was that his name was similar to mine. Diego's letter came into play when it was translated into english and the whole scope of Diego was revealed. The letter seems to indicate that he was larger than life and that he was interested in compensation for his services.
His services included, serving as a Captain, Sargent Major, Governor, spy, soldier, and peace maker. If it is true, regarding the details of the letter, he preformed the impossible by winning numerous victories against the natives but also demonstrated that he wanted to protect them by providing them material needs to survive in the name of peace. There are numerous locations and names that seem to certify that these things really occurred.
I guess this will open a discussion regarding the real Captain Diego Ramon, my ancestor.