Question: What nationality is Ismihan Sultan's mother?
Sentence (from "Nurbanu Sultan"): Nurbanu Sultan (1525 – 7 December 1583) was Haseki Sultan of the Ottoman Empire as the principal consort of Sultan Selim II (reign 1566–1574), as well as Valide Sultan as the mother of Sultan Murad III (reign 1574–1595).
Relevant evidence: Yes