Perhaps you know this already, but one of the first things you must do when beginning research on an Arabic surname is to find what its original pronunciation is. The surname we are researching, for instance, is Shada, which present-day family members pronounce variously with a long or short "A". The original in Arabic sounds more like "Sh'h'dah". It was anglicized to Shada when the family emigrated from Lebanon.I noticed on the Lebanese White Pages that there are surnames such as Saad, Sadd, Saade, Saadeh and Sader in the listings. You might start by asking any of those people for information on the Arabic origins of their names. People on the Pages have usually been helpful with questions I've asked, so what can you lose? Good luck.