The White Tower Schism began in 999 NE when the Amyrlin Seat Siuan Sanche was deposed and stilled by a group of Sitters and others led by Elaida do Avriny a'Roihan. The action led to fighting among sisters and Warders in the White Tower and those sisters opposed to Elaida fleeing to Salidar. The Salidar Rebels set up their own Hall of the Tower, which eventually elected Egwene al'Vere as Amyrlin. Therefore, there were during this period two rival power structures, one in the Tower and one in Salidar, each with its own Amyrlin, Keeper of the Chronicles, Sitters, Mistress of Novices, and Ajah Heads.