Ronaille Vevanios is an Aes Sedai of the White Ajah. Her name indicates that she is from Illian.
Activities
She is one of Elaida's White Tower Aes Sedai who kidnap and beat Rand al'Thor.
She is stilled[1] by Rand when he breaks free in the Battle of Dumai's Wells[2] and taken prisoner soon after by the Aiel Wise Ones. The Wise Ones used mild manners with her because for them her stilling was a sufficient punishment.
The other Aes Sedai prisoners try to stay away from the three who have been stilled [3].
After Healing Irgain Fatamed, Damer Flinn wants to try Healing Ronaille and Sashalle[4]
She is Healed of her severing by Damer Flinn and has sworn fealty to Rand al'Thor[5].
During the Last Battle she probably fights in Thakan'dar along the other sworn sisters.
As many Aes Sedai sworn to Rand, also Ronaille probably fights the Last Battle on the slopes of Thakan'dar[6]. Because it is not stated otherwise it can also be presumed that she survives.
Ajah
Of the thirty-nine sisters sent to kidnap Rand, 15 were of the Red Ajah. According to Galina Casban, the remaining sisters were 10 of the Green and 12 White Ajahs (the last two are Nesune e Coiren, a Brown and a Gray respectively). Ronaille's Ajah is never identified.