Board Thread:Lore Discussion/@comment-24267938-20130323172448/@comment-86.147.72.112-20150131125001

173.230.161.244 wrote:

Dragonborn needs to take the throne. Martin Septim's sacrifice was in vain. No when Uriel Septim VII was killed at the start of Oblivion it basicly let Dagon invade in full force whole armies of Deadra and Dagon himself (in his full powered masive form), Martin's sacrifice set things back to how they were before no more masive armies but also it stopped the need for a Septim to maintain the barrier (maybe even strengthen it a bit).

As a few people have already said theres little connection to the Emperors and the Last Dragonborn (most of them had no chance of actually having the soul of a Dragon) and its almost imposable for them to be actual be relatives the only claim to the Imperial throne the Last Dragonborn could have is though pure strength (and that rarely goes well). Thats just what i see in the official cannon though in you own game you can role play whatever you want of course.