Board Thread:Lore Discussion/@comment-30529651-20161117203555/@comment-26893431-20161117210352

The Hero of Kvatch became sheogorath so yeah, he's still alive.

The Nerevarine is a matter of debate.

Dragonborn can die of age, the best example of this is Tiber Septim.

Miraak being able to live for thousands of years is probably related to Hermaeus Mora.

The situation with Hermaes Mora and Miraak is the most likely scenario for the Last Dragonbron as well.