In the Wheel of Time series, those with access to the One Power have extended longevity. At (roughly) 300 years old, Cadsuane Melaidhrin is believed to be the oldest living Aes Sedai during the series.
However, we also find in "A Crown of Swords" that there is
a large community of women called The Kin, and that some among their number are as old as 500 years.
Considering this, what non-Forsaken character in The Wheel of Time would be the oldest living user of the Power? I'm excluding anyone left over from the Age of Legends like the Forsaken, and when I say a user of the Power I mean a man or woman who channels. Also, I'm looking for the oldest still alive as of the end of A Memory of Light.