Bonwhin Meraighdin

From A Wheel of Time Wiki

Bonwhin Meraighdin was an Aes Sedai of the Red Ajah who was raised to the Amyrlin Seat. Her attempt at controlling Artur Hawkwing led to a nineteen-year-long siege of Tar Valon. Bonwhin was removed from power and replaced with Deane Aryman from the Blue Ajah. She was the last Amyrlin to be raised from the Red before Elaida.

Before Siuan Sanche, Tetsuan and later Bonwhin were the only Amyrlins to ever be stripped of stole and staff. Both of them had been Reds, and it was Bonwhin's succession by a Blue that marked the beginning of the feud between these two Ajahs.