To show how far removed from dependence on Constantinople the islands were at that time, we quote the authority of the chronicler Giovanni Diacono,[h] who dates the origin of the tribunal government and the conformation of the rank to the metropolises of the islands from the arrival of the Lombards. This fact, whilst showing on one side the autonomous position assumed by the islands towards the Byzantine Empire, proves on the other that the dependence of the islands on the mother-country had now virtually ceased. Hence the tribunes after the second half of the sixth century assume the solemn title of tribunes of the islands of the maritime lagunes proposed by the corporations of the same, to show that their election had been made with the full authority of the islands without regard to the mother-cities. The form of the political relations of the islands with Constantinople can be gathered from the account given by the chronicler Altinate of Longinus’ visit to the islands in the year (584) before returning to his country. Altinate relates that when Longinus asked the islanders to receive him into the lagunes, and thence to transport him to Constantinople in their ships, he tried to persuade them by saying that he required no oath of fidelity, but, if they wished to show themselves good servants of the empire and ready to fight their enemies, he would make known or send for what they wanted at Constantinople; he would ask the emperor for whatever they wanted by means of a writing which he himself would place in the hands of the emperor, which would increase the concessions to the islands to have open and free entry to all the ports of the empire in the ways of commerce. The Venetians, satisfied with such promises, after having announced to the exarch how they were situated, how they had made this sanctuary in the lagunes so as not to fear being subjugated by any emperor, or king, or any prince whatsoever in the world, they received him with great honour, and sent with him to Constantinople a deputation to ask the emperor for the things promised by the exarch. And the emperor gave to the Venetians a diploma by which they were to be held in honour by all the authorities of the capital and the state, and to receive the protection of the imperial forces for all the maritime district and complete security for their commerce in the kingdom; and thus the Venetians became subject to his dominion and became proud of the honour. We see from this account of the chronicler Altinate, which was confirmed by subsequent chroniclers, that the primary political relation of the Venetians with the empire was, like that with the Gothic kings of Italy, a relation of protection more than servitude.