Varro Tigurius: Rod of Tigurius

Varro Tigurius: Rod of Tigurius
Is "Chief Librarian Tigurius" a typo, and should it say "Varro Tigurius"?
While Chief Librarian Tigurius is active, your other ultramarines character dice cannot be targeted by your opponents. Varro Tigurius gets +1A and +1D for each other active ultramarines character you control.
Is "Chief Librarian Tigurius" a typo, and should it say "Varro Tigurius"?