The relief of the imperial family conjoined in a sacrifice of thanksgiving owes its distant prototype to the Augustan reliefs on the Ara Pacis in Rome.[citation needed] Galerius' wife, Diocletian's daughter Valeria, is shown at his side, helping authenticate his connection to his predecessor. Here as elsewhere all the faces have been carefully chiselled off, whether as damnatio memoriae or in later cultural intolerance of images.