There is Faddoul in my family lineage, but they were from a different town/city. The first person on record is Faddoul beth iiE-yehlie (ilKhouri) from Deir el-Ahmar, Lebanon. They were Maronites, so if your family were Maronites, they probably tried to get out of Lebanon as the Ottoman Empire/Greater Syria put more pressure on Lebanese Christians.
Anyway, I am not sure if this is helpful at all. As the generations emerged, the last name was simply Faddoul. Emigration to Egypt and Niagara Falls, NY, USA.