In season 1 of the Amazon original TV series, "The Wheel of Time", who is referred to as the Amyrlin Seat?

The Amyrlin Seat is the leader of the Aes Sedai in the White Tower in Tar Valon. Her full title is "Watcher of the Seals, The Flame of Tar Valon, The Amyrlin Seat", but she is usually just referred to as the Amyrlin.

The Amyrlin is the supreme authority among the Aes Sedai, who formally refer to her as "Mother" and she to them as "daughter" or "child" for the Accepted and novices. She is widely recognized as one of the most powerful women in the Westlands, though she can be deposed for malfeasance by the Sitters of the Hall. This is referred to as being "stripped of stole and staff" and has only happened four times in recorded history. The Amyrlin is assisted in her duties by the Keeper of the Chronicles, who is second in command and traditionally sits in on most audiences.

Siuan Sanche formerly of the blue ajah currently occupies the Seat.