I am actually heading to Agerola looking for exactly these two family names - Acompora and Naclerio - when my search found your post.
my gradmother was Alfonsina Acompora born in NYC in 1908 (the first of her siblings to be born here I believe) just after her parents arrived from Agerola, Italy. I know I have second cousins that are Naclerios. I'll check with my mother who will know for sure.
Perhaps we are related? Do you know if there are still any ties with families back here? I'm guessing not.