Board Thread:Lore Discussion/@comment-86.24.50.100-20130623082136/@comment-70.34.133.250-20140501161007

The Last Dragonborn is titled as such because he has the dragonblood gift from Akatosh. This can be bestowed on anyone. Any race as Akatosh may see fit. Tiber Septim was of dragonblood too, but this is NOT hereditary as stated above. The rest of the Septim line being called Dragonborn is simply a title. Nothing more. They are not of dragonblood though as the lore says that it's extremely rare for more than one to appear per era. Plus none of them could shout that's ever been reported. He wasn't ever even called dragonborn until either witnessed shouting/absorbing a dragon's soul, or being summoned by the Greybeards. So it's highly, HIGHLY unlikely that the LB is related to the Septims.

Now in terms of Manker being a db? Well Skyrim's lore sorta refutes that, but then again ES lore does contradict itself sometimes lol. The Commentaries are written by Manker himself. They're HIS comments. So HE'S implying that HE may be a dragonborn? That's not very reliable at all to me.