Salvadore Cammarano
For Verdi he wrote "Alzira" ( 1845 ) , "La battaglia di Legnano" ( 1849 ) and "Luisa Miller" ( 1849 ) , but after he died in July 1852 , Verdi worked with Leone Emanuele Bardare to complete the libretto for "Il trovatore" ( 1853 ) . 
<triplet> La battaglia di Legnano <subj> Verdi <obj> composer <triplet> Il trovatore <subj> Leone Emanuele Bardare <obj> librettist