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Before asking this question what must be thought is that; can a ruler be from a different nation from his father and father's father and so on. In Ottoman Dynasty, at that time there was Greek blood but as far as I can see Kurds were not treated as first class citizens too. Later, in 1600s-1700s-1800s there are many sultan mothers that are Greek, which can make us statement that at the last times of Ottoman Dynasty were actually quite Greek.
Check it out here:
http://www.osmanli700.gen.tr/english/miscel/mothers.html