Complex sentence: Tradition states that he and other Catholic churchmen (such as Gaudiosus of Naples) were loaded onto leaky ships that landed at Naples around 439 AD and Quodvultus established himself in Italy.
Split into simpler sentences: Tradition states that he and other Catholic churchmen (such as Gaudiosus of Naples) were loaded onto leaky ships. The ships landed at Naples around 439 AD and Quodvultus established himself in Italy.