Does Wilhelm Die Re Zero?

Wilhelm, who seemed to finally be hitting the limits of his ability, would have nearly perished as a result had he not been saved by the newest incarnation of the Sword Saint, who turned out to be none other than Theresia.

Does Reinhard die RE Zero?

Reinhard agrees, after which Regulus kills him instantly, but Reinhard is not dead for long, as he uses his Divine Protection of the Phoenix to revive himself.

Is Wilhelm related to Reinhard re Zero?

Reinhard is the grandson of Wilhelm van Astrea and Theresia van Astrea. He inherited the powers and title of the Sword Saint when he was five years old. Theresia died due to this, as she lost her Sword Saint powers while fighting the Hakugei. Wilhelm blames Reinhard for his wife's death because of this.