Board Thread:Lore Discussion/@comment-10993011-20140918001226/@comment-75.150.67.34-20141120155622

Khataria was Tiber's grand niece. Several in game sources specifically say so. We know that Uriel VIII and Martin Septem were Dragonborn, so I can only assume that Khataria was. Although Dragonborn isn't a generic property, it's something that people seem to get randomly. Either that or Talos used CHIM to give Khataria the Dragonborn ability.