The head of the young man, now recognized as Honos, emerged from the foundations of Palazzo Fiano during the works of consolidation carried out in 1859. It remained ignored among the debris in the courtyard of the palace until, towards the close of the 19th century, Petersen noticed it and appreciated its value, ascribing the head to the figure of Bonus Eventus. A few years later Studniczka recognized the fragment as a head of Honos, on the basis of a comparison with a coin of Galba, but made the same mistake as Petersen who had wrongly believed that the piece belonged to one of the Della Valle-Medici slabs, which eventually were recognized to have nothing to do with the Ara Pacis. During the reconstruction of 1938, Moretti inserted the face of the young man in the panel with Aeneas, because its size suggested that it could complete the figure with a spear standing behind the Trojan hero. Honos was therefore transformed into Achates, the best and most faithful of Aeneas’ companions, the warrior who always remained by his side until Aeneas’ landing and settling on the coasts of Latium. During the restoration work carried out on the monument in the 1980s, Moretti’s incoherent arrangement was rejected and the head of Honos was newly ascribed to the panel of the goddess Rome. The head was then removed from the scene of Aeneas’ sacrifice and is now exhibited inside the structure of the Ara Pacis Museum.