Bill Park was 51 when he pulled the handle on the Have Blue prototype- his 4th! ejection. He was inured, but likely not age related.
https://www.f-117a.com/HB1.html
I do wonder if 4 actual ejections (not testing related/on purpose) is a record? I know some late WWII Germans had multiples and a few test and fast jet drivers had multiples, including a few F-8 Crusader pilots with 3.