My Texan lineage has been traced back to the early 1800s, whereupon it falls off a cliff *shrug*.
There are very few Texans in Texas nowadays.
You might be surprised at how many of us there are. I have very many friends who are native Texans—and there are parts of Texas that are almost all natives.
In later years, more people from out of state have been moving in-—but there are large parts of east Texas where the native population is quite large.
Mine goes back to late 1800s, and I am so grateful that my ancestors came to Texas (by way of Galveston).