There is great controversy over who wrote "Alla en el Rancho Grande". In fact, it was a very famous case. Look it up. Emilio D. Uranga wrote the music and Juan Diaz del Moral wrote the lyrics for a musical play produced in Mexico. This was before the song was used in the film staring Tito Guizar in Mexico. The movie was supposed to be called "El Caporal", but was only changed to "Alla en el Rancho Grande" when Tito Guizar suggested it (he sings the song in the movie). Silvano R. Ramos copyrighted the song in the States with English lyrics by Bartley Costello. Ramos took the publisher of a book (I believe published by the University of Texas Press in Austin, Texas, for giving credit to Emilio Donato Uranga and Juan Diaz del Moral as authors of the song. They registered the song with SACM, the Society of Authors and Composers of Mexico, but Silvano R. Ramos and Barley Costello copyrighted with ASCAP. All said and done, I believe that the song was an anonymous folk song that Uranga arranged for the stage in Mexico. Silvano later returned to Mexico. I don't think he ever registered anything with SACM.