Board Thread:Lore Discussion/@comment-85.74.137.231-20130605091958/@comment-9887604-20130605101733

All dragonborn are blessed by Akatosh, it does not have anything neccasarily to do with a blood lineage. Alessia may have been a dragonborn, Reman was certainly a dragonborn, Miraak, Wulfarth, and of course Tiber Septim to name a few. The lineage part comes into play with the amulet of kings, it was gifted to Alessia and imbued with her soul to maintain the division between Oblivion and Nirn. Reman shows up with the amulet and begins the practice of lighting the dragonfires. The Amulet of Kings also known as the Chim-el Adabal was the heart of the white gold tower, which is where the real power to seperate the planes comes from.