[2865] Bayreuth, *Barūthum.
Brockhaus-1809: Bayreuth [2] · Bayreuth
Brockhaus-1911: Bayreuth
Herder-1854: Bayreuth
Meyers-1905: Brandenburg-Bayreuth · Bayreuth [2] · Bayreuth [1]
Pierer-1857: Bayreuth