Bertita Harding
Her book "Phantom Crown" , a biography of the tragic life of Emperor Maximilan of Mexico and his wife Charlotte was turned into a screenplay by John Huston for the film Juarez ( 1939 ) . 
<triplet> Emperor Maximilan of Mexico <subj> Charlotte <obj> spouse <triplet> Charlotte <subj> Emperor Maximilan of Mexico <obj> spouse <triplet> Juarez <subj> John Huston <obj> screenwriter