I am a Leva, but don't know anything about Lucio or Pasqualina Famiglietti. My grandfather, Fiorevanti Leva, was a bit older than Lucio Leva, but my grandmother, his wife, Elivira DiSandro, was born around 1898 in Campobasso, Abruzzi, Italy. All of my grandparents moved to Philadelphia and there are still lots of Levas here in Philly.
Sorry I couldn't help.