I found Delfino Ramoz and Matilda Cesneroz had Mary Ramoz 1932-05-23 in Bexar county.Don't know if this is your grandmother but it's the only one close.
In the Social Security Death Indexes, I found his son. Name Birth Death Last Residence Last Benefit SSN Issued DELFINO C RAMOS24 Oct 1926 11 Feb 1990 78210 (San Antonio, Bexar, TX) (none specified) 270-28-0185 Ohio
Then in the Texas Death Indexes: Ramos Delfino died 1966-02-24 in Webb county. Ramos Delfino Sr.a died 1972-12-15 in Bexar county. Ramos Delfino Cisneros Jr died 1990-02-11 in Bexar county.
Jose Maria Flores and Concepcion Ramos had a couple of kids, Jose Jr and Maria Juana, in Webb county in 1946 and 1948.
Ramos is such a common name, it's almost impossible to find individuals especially given names like Jose, Daniel, etc.
I could not find Delfino in the 1930 Texas Census.