Later, Hurrem became the first woman to remain in the sultan's court for the duration of her life. In the Ottoman imperial family tradition, a sultan's consort was to remain in the harem only until her son came of age (around 16 or 17), after which he would be sent away from the capital to govern a faraway province, and his mother would follow him. This tradition was called "Sancak Beyliği." The consorts were never to return to Istanbul unless their sons succeeded to the throne. In defiance of this age-old custom, Hurrem stayed behind in the harem, even after her sons went to govern the empire's remote provinces.