I am a collector of old envelopes sent from Lebanon before 1920 and I have quite a few including one to Mr Peter Joseph Saad, 86 Essex St., Boston, Mass. in 1898. It was mailed from the town of Bcherri in northern Lebanon. I think Saad is a "more common" name so there may or may not be a connection.
I don't know if anyone in your family saved any old correspondence but, if they did, I would sure like copies of any envelopes.