 Order was re-established only after Iltutmish's grandson Nasiruddin-Mahmud became Sultan with Iltutmish's prominent slave, Ghias-ud-din-Balban as his deputy ("Naib") in 1246.Balban held all the power at the time and became Sultan in 1266.Balban's descendants ruled Delhi until they were overthrown by the Khaljis.