Istredd never remembers who knows this information or not. He doesn't keep it a secret, it just sometimes comes up or not, depending on who he's talking to.

"I'm in my late eighties I think. I don't know when I was born." Istredd doesn't remember a life before the Brotherhood, he was young when he was taken, when he first showed his gifts. Any family he might have had is lost to him. He doesn't know the year he was born because of that, but all the mages in his class were around the same age.

"We're still considered essentially children or youths until we're past a century. My mentor is closing in on five hundred soon, and he probably has a few more hundred years ahead." Unfortunately for the rest of them, he's not going away any time soon. "Our magic sustains us, we age very slowly. I'll look the same for hundreds of years."