Board Thread:Lore Discussion/@comment-2.100.92.38-20130821124429/@comment-25047024-20140130065245

Nah, it's because Tiber Septim/Hjalti Early-Beard was a Shezarrine and a Dragonborn. That is something damn special in the Aurbis. The Last Dragonborn could also be a Shezarrine and a Dragonborn, which is why the Ghost mistook the LDB for Hjalti.