Tindwyl was a Keeper of Terris and a member of the Synod. She spent much of her life voluntarily working for the breeders, successfully transmitting Feruchemy to the next generation.
A specialist in biographies, she took it upon herself to teach Elend how to be a king.
She fell in love with Sazed in Book 2. She was killed during the Siege of Luthadel, and this made Sazed question his faith.