The exiles had decided to settle on a favoured group of islands, midway in the lagoon, known collectively as the Rivoalto or the high bank. This eventually became the Rialto, the pre-eminent market-place and emporium of the city. The islands were interspersed with rivulets and water-courses but there was one larger river, a tributary of the Brenta known as the Rivoaltus; this became in time the Grand Canal. Two more solid hills or islands—their description depends entirely upon how you judge the nature of the territory—faced each other along the course of this river. This is where Venice was created. This was land where the exiles could build. It was not easy work. In 589 there are reports of catastrophic flooding throughout the entire region, the force of which was so great that the course of certain rivers was altered. The calamity would have changed the hydraulic structure of the lagoon, but its effects upon the emerging Venice are not known.
Venice did not immediately become the most important city of the lagoon. Grado was the seat of the patriarch; Torcello was the great emporium or market of the region. The ducal seat, as it became known, moved from Eraclea to Malamocco. In the period when Venice was first being settled, there were elaborate building works elsewhere. The basilica of S. Maria Assunta was then being built on Torcello; an inscription on that site is dated 639, and confirms that the church was erected within the context of Byzantine ritual and worship.
The connection with Byzantium is important. The historiographers of Venice insisted that from the beginning the Venetians asserted their independence. There is a famous legend of their leaders telling a representative from Byzantium that God Himself “has preserved us that we may live in these watery marshes, in our huts of wood and wattle. For this new Venice which we have raised in the lagoons has become a mighty habitation for us.” They could not be touched by the kings and princes of the world “unless they come by sea, where lies our strength.” This is pure myth-making. The Venetians were at the beginning a subject people. The language of the early Venetians had an admixture of Greek, for example, and as late as the last century there were still Graeco-Roman elements in the dialect of the islanders of Burano.
There is some disagreement about the date when the first military commander of the lagoon, or
Venice is made up of 117 separate islands that were with effort and labour eventually conjoined. There were at first scattered island parishes, some of them dominated by monastic foundations and others by small communities such as fishermen or salt producers. There would have been islands of boat-builders, too. These insular communities were grouped around a church and