You need to provide more details and be specific with what kind of help you need.
Have you found passenger records?
Have you found the family in applicable census years?
Do you have birth marriage and death certificates for events that occured in the USA? Events from Italy?
Have you done research in comune records in Italy?
Are you looking for family still in Italy?
Tell us where you are in your research. All, first and last name of the immigrant, year of birth and death, names of spouse and children all help.
natale (cristoforo) Imbrogno married Michelina Rocco in San Pietro Zumpano they along with their children came to you USA. I have all the records i can here in the US...looking for more information on maybe siblings of Natale or Michelina or the names of their parents. Natale was born about 1846 and Michalina in 1860