I have some relatives with the name
Jasso Jaso, Jazo same difference. I have seen baptismal records with all three names. On my farhers side the name comes from my great-grandmother. The name appears in the state of Nuevo Leon in the 1600's in Cerralvo, N.L.. My grandfather was Genovevo
Lopez Jasso, his mother was Maria Prota
Jasso. On my grandfather's baptism record the last name is spelled Jazo. I hope this can be of help. Other names associated withe the name
Jasso include:
Guajardo,
Benavides. Losano, Ramon,
Salinas and
Lopez