Cassiodorus then goes on to describe how he laboured for his young Sovereign with the sword as well as with the pen. Some hostile invasion was dreaded, perhaps from the Franks, or, more probably, from the Vandals, whose relations with the Ostrogoths at that time were strained, owing to the murder of Theodoric's sister Amalafrida by Hilderic the Vandal King. Cassiodorus provided ships and equipped soldiers at his own expense, probably for the defence of his beloved Province of Bruttii. The alarm of war passed away, but difficulties appear to have arisen owing to the sudden cancellation of the contracts which had been entered into when hostilities seemed imminent; and to these difficulties Cassiodorus tells us that he brought his trained experience as an administrator and a judge, resolving them so as to give satisfaction to all who were concerned. [Sidenote: Cassiodorus as Praetorian Praefect, 533.] Seven years of Amalasuentha's regency thus passed, and now at length, at fifty-three years of age, Cassiodorus was promoted (Sept. 1, 533) to the most distinguished place which a subject could occupy. He received from Amalasuentha the office of Praetorian Praefect. As thirty-three years had elapsed since his father was invested with the same dignity, we may fairly conjecture that father and son both climbed this eminence at the same period of their lives; yet, considering the extraordinary credit which the younger Cassiodorus enjoyed at Court, we might have expected that he would have been clothed with the Praefecture before he attained the fifty-third year of his age. And, in fact, he hints in the letter composed by him, in which he informs himself of his own elevation[55], that that elevation had been somewhat too long delayed, though the reason which he alleges for the delay (namely, that the people might greet the new Praefect the more heartily[56]) is upon the face of it not the true cause. [Footnote 55: Var. ix. 24.] [Footnote 56: 'Diutius quidem differendo pro te cunctorum vota lassavimus, ut benevolentiam in te probaremus generalitatis, et cunctis desiderabilior advenires.'] [Sidenote: Office of the Praetorian Praefect.]