Somebody made documents of the conquistadors name but I have no idea where you would find them and I don't know any de la Cerdas that are still living. Somebody I have no idea who made papers on the history of Nepomuceno de la Cerda and his descendants I saw the papers before but I don't know who would have any. I remember it said something about the University of Texas located in Austin so that's probably where they found the info. I wrote some of the info down but I could remember most of it. The only two de la Cerdas my dad knew were James Santiogo DeLacerda , WWI soldier, and Gene de la Cerda , James S. DeLacerda's nephew who fought in WWII and was badly wounded during the Korean War and would probably have a long military record because he was a soldier for 22 years, both are dead.You could also find info on Lacerda, TX named after Nepomuceno de la Cerda because he was granted 3 1/2 leagues of land in Nacodoches and his son was granted 11 leagues. near Marlin, TX, I think they were granted it by the King of Spain. Nepomuceno was also described as a very refined man, had a fine education, and beautiful handwriting. I think he was buried under the old courthouse in Nachodoches or somewhere. What line of de la Cerdas did you descend from? I might have heard there name before.