It will be seen that the letters written by Cassiodorus for the Sovereign during the five years following the death of Athalaric are few and somewhat unsatisfactory. But, on the other hand, it was just during these years that he wrote in his own name as Praetorian Praefect the letters which are comprised in the Eleventh and Twelfth Books of his collection, and which are in some respects the most interesting of the whole series. There is a strong probability that he was not present at the long siege of Rome (March, 537, to March, 538), nor is it likely that he, an elderly civilian, would take much part in any of the warlike operations that followed. Upon the whole, it seems probable that during the greater part of this time Cassiodorus was, to the best of his power, keeping the civil administration together by virtue of his own authority as Praetorian Praefect, without that constant reference to the wishes of the Sovereign which would have been necessary under Theodoric and his daughter. Perhaps, in the transitional state of things which then prevailed in Italy, with the power of the Gothic sceptre broken but the sway of the Roman Caesar not yet firmly established in its stead, men of all parties and both nationalities were willing that as much as possible of the routine of government should be carried on by a statesman who was Roman by birth and culture, but who had been the trusted counsellor of Gothic Kings. [Sidenote: Dates of later letters.] I have endeavoured as far as possible to fix the dates of these later letters. It will be seen that we have one[69] probably belonging to the year 536, five[70] to 537, and one[71] (possibly) to 538. These later letters refer chiefly to the terrible famine which followed in the train of the war, and of which Cassiodorus strenuously laboured to mitigate the severity. [Footnote 69: Var. xii. 20.] [Footnote 70: Var. xii. 22, 23, 24, 27, 28.] [Footnote 71: Var. xii. 25.] [Sidenote: End of Cassiodorus' official career.] It is possible that the Praefect may have continued to hold office down to the capture of Ravenna in May, 540, which made Witigis a prisoner, and seemed to bring the Ostrogothic monarchy to an end. Upon the whole, however, it is rather more probable that in the year 538 or 539 he finally retired from public life. The dates of his letters will show that there is nothing in them which forbids us to accept this conclusion; and the fact, if it be a fact, that in 540, when Belisarius, with his Secretary Procopius in his train, made his triumphal entry into Ravenna, the late Praefect was no longer there, but in his native Province of Bruttii, a little lessens the difficulty of that which still remains most difficult of comprehension, the entire omission from Procopius' History of the Gothic War of all mention of the name of Cassiodorus. [Sidenote: The Variae edited.]