Does anyone know anything about EDWARD BRANGWYN who wrote a song called People's Front which was published in Canciones de las Brigadas Internacionales? You can see the song reproduced on Google Books using this link.

PEOPLE'S FRONT by EDWARD BRANGWYN

Edward Brangwyn would appear to be British from the lyrics of the song. The book was published in 1938 and the song did not appear in earlier editions of the book published in 1937. I have a complete copy of the book and there is no more information about the man or the song in it.