Her name could indicate that she was from Illian, given her melodious surname that ends with -os. Medanor held the position for twenty-nine years until her death in 171 NE. She was Balladare Arandaille's successor and Kiyosa Natomo's predecessor. It is possible that the Kavarthen Wars continued into her reign, as they are only stated as having begun at the end of the reign of the former Amyrlin Seat. She was a fairly strong Amyrlin and skilled in mediation.