I have very little to go on with this family.
I'm not sure about the 1880 birthdate. Juan's age varies wildly on the 2 censuses where I've found him. His wife's name was Maria.
Their children were: Clement 1901, Severa 1903, Senon 1906, Secundino 1910. All born in Mexico.
In 1920, they were living in Morgan Twp, Murray, Oklahoma. In 1930, Juan was living with his daughter Severa and her husband Maximino Martinez in Parker County, Texas. He was widowed by then.
Severa was my husband's grandmother, but I have been unable to find any information on her brothers and did not find them anywhere on the 1930 Texas census nor on the SSDI nor in the Texas Death Records.