The last name Corey is the same as Khoury, except it was changed when some of the Khoury families came to the U.S. From what I understand, there is only one family Khoury in the world and it originated in Lebanon in a small town called: Kaf-fa--who-na. Also, the name Khoury mean, Priest in arabic. Let me know, if if was of any help to you. Thank, Rose