Lord Willin Mantear is a noble from Andor.
Lord Willin Mantear was the tutor, mentor and guardian of his nephew Perival Mantear, the High Seat of his noble House. He is elderly and he would have traveled to Caemlyn with Perival to support Elayne for the Lion Throne, but he could not as he is bedridden.
When Dyelin Taravin was visiting House Mantear to gain support for Elayne, Willin told her to tell Elayne that he sends his good wishes, as well as one he considers a son. He tells Perival to uphold the honor of both Mantear and Andor
Elayne thinks that Willin has done a good job with Perival, and that she must keep it from going to waste.