Tübingen: Max Niemeyer 1977. External links Falconieri, Tommaso di Carpegna (2020). "Vittore IV, antipapa." Dizionario Biografico degli Italiani Volume 99 (Trecani 2020) Year of birth unknown Place of birth unknown Date of death unknown Place of death unknown 12th-century antipopes 12th-century Christian clergy Victor 4 1