The Roman historian Livy reports that Ancus Marcius, Rome's fourth king, defeated the Latins of Politorium, and resettled them there.[9] The Roman geographer Strabo credits Ancus with the building of a city wall to incorporate the Aventine.[10] Others credit the same wall to Rome's sixth king, Servius Tullius. The remains known as the Servian Wall used stone quarried at Veii, which was not conquered by Rome until c.393 BC, so the Aventine might have been part-walled, or an extramural suburb.