Bonwhin Meraighdin

The Amyrlin Seat during Artur Hawkwing's rule, roughly FY 939 - FY 992. She was stripped of her stole for nearly destroying the White Tower. She was originally from the Red Ajah.

Chronology

Circa FY 939, Bonwhin Meraighdin is raised to the Amyrlin Seat from the Red Ajah. (Guide)
After Artur Hawkwing brings Guaire Amalasan to Tar Valon, Bonwhin issues a curt order for him and his army to leave within five days. (Guide)
Bonwhin attempts to manipulate Artur Hawkwing during his reign. This eventually leads to his laying siege to Tar Valon. (Guide, TGH,Ch5)
In FY 992 Bonwhin is deposed and stilled for her failed attempts to manipulate Artur Hawkwing. (Guide, TGH,Ch5)
Bonwhin dies in FY 996. (Guide)

Guide - Her full name and dates are given.
TGH,Ch5 - Bonwhin was the last Amyrlin Seat to be raised from the Red Ajah.
TSR,Ch47 - Bonwhin was the last person confined in the White Tower dungeons before Siuan and Leane.
TFoH,Prologue - Elaida keeps a triptych of Bonwhin on the wall of her study as a reminder of the price of failure.
TFoH,Ch11 - Deane Aryman succeeded Bonwhin and restored the integrity of the White Tower.
TFoH,Ch15 - In Tel'aran'rhiod, Egwene and Nynaeve note Bonwhin's portrait in the Amyrlin's study.
CoT,Ch30 - When Egwene complains about Romanda and Lelaine not respecting her, Siuan says that pair would not follow Deane Aryman who saved the White Tower after Bonwhin's disaster with Hawkwing.