[color:"purple"] I have been really keeping a close eye on my VV's "elders" and am relatively certain that 78/79 is the normal age of death in all of my villages.
I have one easy and one hard mode, the other three on normal. I don't strive for double masters, and apart from training them in their teens, I pretty much leave them to it, and only change their career for breeding or healing. Although have plenty of doctors so I don't even do that now.
Today, I accidently got my 78 yr. old Master Doctor Eibhlinn (Irish for Evelyn, pronounced E-vlin) pregnant. I was placing potential daddy on someone else and he/I literally brushed against her. Anyway, I was really hoping she would make it through to second delivery state (when she's no longer nursing) but sadly, she passed away with baby.
So, my own thoughts on this are pretty much the same, that late 70's is usual life span.
The most noticeable increase in life spans, I think, are when you are achieving levels 2 and 3. But once your village is established, and depending on how hard a task master you are, to a certain extent, life after 79 is very rare indeed.
Just thought I'd share,
Best of Irish,
Maura