For those who are going to join in at some point, When Alexander the Great died, one of his Macedonian (Greek) generals, Diadochi, took over Egypt and declared himself, Pharoah Ptolemy I, Soter. The Macedonians considered the Syrians, Egyptians and others in that region to be inferior, so when they took a wife, they brought one in from Macedonia to rule by the Pharoah's side. This went on throughout the various Ptolemy's reign. Cleopatra was technically Macedonian by blood, although she was the first in the line to actually speak and read in Egyptian.
So, Caucasian she was. The old actual Egyptian line of rulers ended with the Macedonian conquering and take over of Egypt.