Yet another version is on display currently at the Alamo, in an exhibit claiming that the term gringo originated from Mexican soldiers hearing their Irish counterparts yelling "Erin go bragh" (the Irish battle cry) whenever they charged.
In 1969, Jose Angel Gutierrez (one of the 5 leaders of the Mexican American Youth Organization) said his and MAYO's use of the term, rather than referring to non-Latinos, instead referred to institutions or persons with attitudes or policies/programs that reflect bigotry, discord, prejudice, racism and violence [REF].