What the oldest Villager you have had? I'm on my first game and I only have about 16 villages and some of the original villagers are over 40. What is their general life expectancy (I only have Fertility Level 1).

You have to get medicine to make them live longer. At level one, they get elderly at 50, I think, and will die 5 or so years later.

If you want to see a thread that discusses how long people's villagers have lived, you can look here.