Valide Sultan was the title held by the mother of a ruling sultan of the Ottoman Empire. The title was supposedly created by Suleiman the Magnificent in the 16th century for his mother Hafsa Sultan, superseding the previous epithets of mehd-i ulya . Normally, the living mother of a ruling sultan held this title; mothers who died before their sons' accession to the throne never received it. In special cases, there were grandmothers, stepmothers, adoptive mothers and sisters of the ruling sultans who, although not officially holding the title, assumed the role of valide sultan, like Mihrimah Sultan, the most powerful and influential Ottoman princess, and Rahime Perestu Sultan.