Roger Long wrote:

The last pilot to have been trained by, and had his license signed by,
Orville Wright died while I was doing my primary training in 1997 or 1998.
He was still flying.

Of course, since I'm an ancient 54, I may not have the dates or details
exactly right.

http://airsports.fai.org/sep2000/sep2000let.html

The above link claims one such pilot alive and still flying
at age 100 (!) in sep 2000
CV