Some Spaniards lived in the area and I do find one family line that runs back into Spain from there. Otherwise many records, identified often by a mother and child with no father listed and instead padrinos or godparents/sponsors that often lent a name to the Tigua child being converted into society through that baptism.
This is what I'm finding in these records. Mom, child, godparents.
Then I find history of the political shifts in the area.
@Fellixe That's awful
1820's and Mexico gains independence. They follow Spain's model of respecting the Tigua land. 1850's and the shifting Rio Grande puts Ysleta, Socorro, San Elizario in limbo between the US and Mexico. Ultimately most becomes US Texas territory. Then the Americans start screwing the Tigua out of their lands. Lincoln grants land to the Pueblo but excludes the Tigua. Texas makes moves to stomp on US efforts to protect indigenous lands. And the Tigua are displaced.