As documented in my book "The Coreys of East Wilton" (copyright 2002), the surname Corey or Cory have their earliest origins in County Cork, Ireland. I did much of my research in Ireland. The surname can be traced back to ancient times, and means "an affable person" (someone who's easy to talk to). This is the most ancient, documented origin and meaning of the name. All variations of the name ultimately go back to the same root of the name.