Iginio Ugo Tarchetti

Born in San Salvatore Monferrato in Piedmont, Iginio Ugo Tarchetti was an Italian writer, poet, and journalist associated with the early Scapigliatura, a bohemian and anti-conventional literary movement centered in northern Italy. Sources consulted during this search describe him as leaving military life because of poor health and later settling in Milan, where he worked for newspapers and built his literary reputation.

Tarchetti is remembered for fiction that mixed romance, morbidity, and psychological tension. His best-known work is Fosca, a novel published after his death that became one of the books most closely linked with his name. Even with a very short life, he earned a lasting place in Italian literature for his intense style and his interest in troubled, unconventional characters.

There is one detail worth noting carefully: the dates are not fully consistent across the sources found here. Wikipedia gives his life as 29 June 1839 to 25 March 1869, while some other sources use 1841 as his birth year. Because of that conflict, it is safest to say that he died young in Milan in 1869.