is absolutely no evidence" that Cleopatra was racially black African as claimed by what he dismisses as generally not "credible scholarly sources." He goes onto say outside the hypothesis of Cleopatra being three-quarters Macedonian Greek and a quarter Egyptian, there is "no room for anything else, certainly not for any black African blood." Diana Preston also writes that Cleopatra's paternal grandmother may have been part Syrian, continuing that even if Cleopatra had an Egyptian grandmother "it does not follow she was a black African" and that Cleopatra "almost certainly had olive skin and dark eyes." Adrian Goldsworthy notes Cleopatra, having Macedonian blood with a little Syrian, was probably not dark skinned (he also notes Roman propaganda never mentions it), contending "fairer skin is marginally more likely considering her ancestry," and that she "was no more Egyptian culturally or ethnically than most residents of modern day Arizona are Apaches." He further notes that Cleopatra's native tongue was Greek, that it was in "Greek literature and culture she that was educated," that her worship of Isis was "strongly Hellenised," and that although she was presented in some statuary in the idealized Egyptian style, she was unlikely to have dressed like this outside of performing certain rites. Instead, he continues, Cleopatra "wore the headband and robes of a Greek monarch." Stacy Schiff concurs Cleopatra was not dark-skinned, that "the Ptolemies were in fact Macedonian Greek, which makes Cleopatra approximately as Egyptian as Elizabeth Taylor", that her Ptolemaic relatives were described as "honey skinned", that she was part Persian, and that "an Egyptian mistress is a rarity among the Ptolemies." Mary Lefkowitz notes that had Cleopatra's grandmother or mother been Egyptian, it surely would have been pointed out in the records, and concludes that whatever her ancestry, Cleopatra "regarded herself as Greek." Schiff continues that Cleopatra "faithfully held up the family tradition." In essence, Cleopatra's loyalties were to her Ptolemaic Greek heritage. As noted by Donald R. Dudley, Cleopatra and her family were "the successor[s] to the native Pharaohs, exploiting through a highly organized bureaucracy the great natural resources of the Nile Valley." Arsinoe IV In 2009, a BBC documentary speculated that Arsinoe IV of Egypt, the half-sister of Cleopatra VII, may have been part North African and then further speculated that Cleopatra's mother, thus Cleopatra herself, might also have been part North African. This was based largely on the claims of Hilke Thür