Tom Irey, "the Irey guru" hasn't found a connection or a wife either. He spends most vacations interviewing Irey's, digging around for hidden information, and trying to clear up Irey misconceptions.
It would be nice to do a DNA test to see if the two lines do match up.
My Irey's married into the Rakestraw family. The papertrail has always suggested that most Rakestraws descended from William Rakestraw however DNA tests are showing at least 3 different lines now. The same info might come someday for the Ireys.