Researching family history

I was adopted at a young age and I don't know much about my birth family.I now have a daughter of my own and we both would like to know more about our heritage.We have been able to find out that my great grandparents moved to the United States(Maryland)from Sicily to start thier own shoe business.Thier names were Antonio(Tony)and Rosa Fertitta. We also know that some of thier relatives also moved to Louisiana.If anyone knows of these people please email me so that my daughter and I can know more about where our family came from