http://www.freerepublic.com/focus/f-news/822665/posts
It appears that the problem with credibility is yours, not mine.
You assume that all the Spanish surnamed of the SW have a Mexican identity --- and I can tell you with certainty that is false. It's only the recent arrivals that do --- there are familes of the SW never did immigrate from Mexico. Mexico did not rule over the former Spanish territories for very long at all --- and it lost them because it ruled over them about as poorly as it rules over it's established states. There are also other reasons ---- the Indians of the SW were a big barrier to Spanish and/or Mexican settlement. Again --- do an experiment --- put up a statue of Davy Crockett for example --- and then try to put up one of Don Juan de Onate.