The Quickie Version

If your noodle got fried trying to decipher that family tree, here's my own direct ancestry:
Salim Furth
Elizabeth Ray
Ralph Ray
Yousef Kfouri
Ayoub Kfouri+Mariam Sawaya
Mikhail Kfouri / Nassib Sawaya
Najim Kfouri
Boulos Kfouri

By my calculations, Boulos was born in about 1790. I don't know most of the women involved here, but I assume that for every great-grandfather there is an equal and opposite great-grandmother, even if nobody remembers her name.