I will now tell how Belisarius fell out with John, the nephew of Vitalianus, a matter which was exceedingly prejudicial to the interests of Rome. The Empress was so violently incensed against Germanus, and showed her dislike of him so plainly, that no one dared to connect himself with him by marriage, although he was the Emperor's nephew, and his children remained unmarried as long as she lived, while his daughter Justina was also without a husband at the age of eighteen. For this reason, when John was sent by Belisarius on a mission to Byzantium, Germanus was forced to enter upon negotiations with him with a view to marriage with his daughter, although such an alliance was far beneath him. When both had settled the matter to their satisfaction, they bound each other by the most solemn oaths, to use their best endeavours to bring about this alliance; for neither of them trusted the other, as John knew that he was seeking an alliance above his station, and Germanus despaired of finding another husband for his daughter. The Empress was beside herself at this, and endeavoured to thwart them in every possible way; but as her threats had no effect upon either, she openly threatened to put John to death. After this, John was ordered to return to Italy, and, fearing Antonina's designs upon him, held no further communication with Belisarius until her departure for Byzantium; for he had good reason to suspect that the Empress had sent instructions to Antonina to have him murdered; and when he considered the character of Antonina and Belisarius's infatuation for his wife, which made him yield to her in everything, he was greatly alarmed.