Gondebaud dwelt at the Constantinopolitan court during the reigns of Justin the Second and his successor Tiberius. With Maurice, general and subsequently successor of the latter, he served in several campaigns against the Persians, and apparently with credit. He would probably have ended his days honourably in the Eastern Empire had not a certain conspirator, Boson, tempted him to return to France with the information that his supposed brother Sigobert had been treacherously murdered; that the two infamous queens, Brunechild and Fredegonde, had completely disorganized the country with their crimes and quarrels; adding, that the time was ripe for his return, the people being only too desirous of submitting to his rule, and that the two kings who now divided the country between them, being childless, would not offer any great opposition to his claims. Deceived by these specious arguments, Gondebaud, after a sojourn of twenty years in the Orient, returned to France, taking with him good equipments and a large sum of money, advanced by his friend the Emperor Tiberius. Landing at Marseilles, he was received by the bishop of that city with great honours, and the news of his arrival having spread abroad, coupled with the rumour that he was accompanied by enormous wealth, the result of having discovered the supposed hoard of Narses, caused large numbers of people, including many of high rank, to come to his camp to pay homage. In addition to their expectation of bountiful gifts from his hands, his visitors found Gondebaud good-looking, and apparently worthy of the warlike reputation he had obtained from having served under Narses and Maurice. The Duke of Toulouse and other independent nobles proffered their alliance; so that after all his tussles with fortune our hero seemed at last nearly certain of a kingdom. But at this critical moment the traitor Boson turned against him, and, seizing his treasures, compelled Gondebaud to fly, and take refuge in an impregnable island at the mouth of the Rhone.