Warning: Spoiler! (Click to show)
separate prophecies Warning: Spoiler! (Click to show)
I always find it very obvious that Lightbringer is essentially the same name as Dawn, the sword of Ser Arthur Dayne. Dayne was the last Kingsguard guarding Lyanna and Jon Snow (theory) at the Tower of Joy and would have killed Ned but for the intervention of Howland Reed. Ned returned Dawn to his sister, Ashara, who threw herself from her window in morning for either her brother, her still born child, or isn't really dead. Side-note, Ser Barristan was in love with her but never told her.