Overview
Torcello is a sparsely populated island at the northern end of the Venetian Lagoon, in north-eastern Italy. It was first settled in 452 CE and has been referred to as the parent island from which Venice was populated. It was a town with a cathedral and bishops before St Mark's Basilica was built.
History
After the downfall of the Western Roman Empire, Torcello was one of the first lagoon islands to be successively populated by those Veneti who fled the terra ferma (mainland) to take shelter from the recurring barbarian invasions, especially after Attila the Hun had destroyed the city of Altinum and all of the surrounding settlements in 452. Although the hard-fought Veneto region formally belonged to the Byzantine Exarchate of Ravenna since the end of the Gothic War, it remained unsafe on account of frequent Gothic (Sarmatian) invasions and wars: during the following 200 years the Lombards and the Franks fuelled a permanent influx of sophisticated urban refugees to the island’s relative safety, including the Bishop of Altino himself. In 638, Torcello became the bishop’s official seat for more than a thousand years and the people of Altinum brought with them the relics of Saint Heliodorus, now the patron saint of the island.
Torcello benefited from and maintained close cultural and trading ties with Constantinople: however, being a rather distant outpost of the Eastern Roman Empire, it could establish de facto autonomy from the eastern capital.
Torcello rapidly grew in importance as a political and trading centre: in the 10th century it had a population often estimated at 10,000–35,000 people, with 20,000 the most commonly cited estimate. However, some recent estimates by archeologists place it at closer to a maximum of 3,000. In pre-Medieval times, Torcello was a much more powerful trading center than Venice. Thanks to the lagoon’s salt marshes, the salines became Torcello’s economic backbone and its harbour developed quickly into an important re-export market in the profitable east-west-trade, which was largely controlled by Byzantium during that period.
From Wikipedia (CC BY-SA 4.0).