From Tar Valon Library
Author: Kyria d'Oreyn
Mandein was an Aiel sept chief during the construction of Rhuidean, and is Rand's ancestor. His wife was Sealdre and his greatfather was Comran. He was forty in Rand's vision when he entered Rhuidean as the first sept chief to be tested.
His wife sent him to the meeting of the sept chiefs at Rhuidean.
(Reference: The Shadow Rising, Chapter 25)