 The envoys insisted that the conflict was caused by the building of Roman forts in their lands; furthermore individual bands of Quadi were not necessarily bound to the rule of the chiefs who had made treaties with the Romans – and thus might attack the Romans at any time.The attitude of the envoys so enraged Valentinian that he suffered a burst blood vessel in the skull while angrily yelling at them, provoking his death on November 17, 375.A.H.M.