Many marble seats and their remains in the Colosseum auditorium have clues as to who they were used to. Most of the preserved seats date back to the 3rd-4th century CE and has engraved the names of Roman families and senators. In the event that the place changed ownership, the previous name was removed and the name of the new person was drilled in its place.
Recent research shows that one of the sites belonged to a certain Iobius Philippus Ymelchoa Valerius, which could have been Valerius, consul from 521. This may, in turn, prove that the amphitheatre was in use until the 6th century CE.
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