Alfred Duru
Alfred Duru ( 27 November 1829 – 28 December 1889 ) was a 19th-century French playwright and operetta librettist who collaborated on more than 40 librettos for the leading French composers of operetta: Hervé , Offenbach , Lecocq and Audran . 
<triplet> Alfred Duru <subj> 27 November 1829 <obj> date of birth <subj> 28 December 1889 <obj> date of death