Hence, one of the earliest Catholic writings attempting to demonstrate that Rome had a series of early bishops/popes states that Peter was NOT originally buried in Rome. There would be no point in moving Peter's body if people actually had believed that the Tropaion Gaii marked the spot.
Interestingly the conclusion of the one who supposedly identified the body of Peter in Vatican Hill was that he was not convinced it was Peter:
"Antonio Ferrua ...was the Jesuit archaeologist responsible for uncovering what is believed to be the tomb of St Peter in the grottoes under St Peter's Basilica in Rome…Ferrua's discovery came, however, quite by chance. In 1939 Pope Pius XI died and plans were made to bury him beside Pius X in the crypt below the basilica. But when workmen began to dig under St Peter's they came upon the floor of Constantine's original basilica, beneath which was a necropolis, a street of Roman tombs dating from the 2nd century AD…Under the supervision of Monsignor Ludwig Kaas, the Administrator of St Peter's, the Vatican appointed four archaeologists, including Ferrua, to investigate the tombs…Ferrua's discovery was shrouded in controversy; in 1953, after the death of Monsignor Kaas, it was revealed by a workman that he had discovered some other bones which Kaas had ordered to be removed from the repository and stored at the Vatican. When these were later identified as the remains of an elderly man, it was concluded that these were the bones of the saint. "The relics of St Peter," announced Pope Paul VI on June 26 1968, "have been identified in a manner which we believe convincing"; the following day, after a ceremony in front of the aedicula, the remains were restored to the repository.
Ferrua was more circumspect. Aware of the scepticism that surrounded even the analysis of the Greek fragment - which others had read as Petros endei or "Peter is not here" - he recently told the Italian Catholic newspaper L'Avvenire that he was "not convinced" that the saint's bones had been found…A man of deep faith, Ferrua was a rigorous scholar, much admired for his refusal to allow his beliefs to compromise his work (The Rev Antonio Ferrua. Telegraph, London - May 29, 2003
The Rev Antonio Ferrua - Telegraph viewed 07/20/09)."