 The association with the cult of Diana led to its development as an influential and affluent centre of healing and medicine.In 508 BC, Lars Porsena king of Clusium (at that time reputed to be one of the most powerful cities of Etruria) departed Rome after ending his war against Rome by peace treaty.Porsena split his forces, and sent part of the Clusian army with his son Aruns to wage war on the Latin city of Aricia.