Frances,
My Great-Grandfather's name was Attilio Errante. I was born in Norfolk, Virginia, USA. He came over sometime between 1900-1920, most likely in the 1910's. My Grandfather, Santo Errante, relocated from NYC to Binghamton, NY, in the early 1960's. I hope this information helps you out.
John
PS- Oops, forgot Palermo wasn't spelled with and extra "A"!