EWoT:Jonai was a Da'shain Aiel lived during the Breaking of the World. His story is learned from Rand's visions in the ter'angreal of Rhuidean.
Ancestry of Rand al'Thor
In his childhood, Jonai was befriended by Someshta, and once rode on his shoulders. During the early days of the Breaking, he was present in Paaran Disen before it's destruction. There, he was charged by Solinda Sedai to take the Aiel to safety along with a number of Chora tree cuttings and angreal, sa'angreal, and ter'angreal.
Many years later, he was present when the Aiel encountered a group of Ogier and learned of the beginnings of the Longing. At this point Jonai suffered a heart attack and died, instructing Adan to keep the Covenant with his last breath. Jonai was an ancestor of Rand.