Yeah Dayve, I've seen that happen with Chermonides. However, my best general that I keep on constant campaign usually can live til his 70s only to drop dead in retirement. I've always felt really bad to keep them campaigning until they died so I usually retire them when they hit their golden years.
I did have my last Spartan general with a Spartan bodyguard in a KH campaign live until he was 68. I think I kept him the field too long since he never got a 'age' trait beyond 'middle-aged.' The other Spartans died fighting the Macedonians so he had to take revenge on them. He took the last settlement and killed Perseus of Macedon and promptly died of old age in between turns.
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