Oh, good....I'm glad I was able to help.
I've heard mention of what you talked about with the assimilation but I can't say that I've ever heard of it in context with anything to do with Texas. That seems to be more like Plains States to me.
As you move through this little adventure please let me know if I can be of any additional help. I know quite a bit about Mexicans immigrating to Texas and I have over 30 years of genealogy experience. The surname Martinez will not be helpful because it is so common. You can email me anytime at
bexargenliblookup@gmail.com. Remember that there's no such thing as a stupid question. My name is Terri and I live in San Antonio.
Best of luck!