The Venetian Republic ended on 12 May 1797, when the Great Council abdicated in favour of a provisional government after a day of tumults, followed by sackings and destruction in the city (Girardi, 2017, p. 356). Dating the start is harder. The two constitutional turning points that can be dated are 1032, the end of a de facto hereditary dogeship, and 1172, the founding of the parliament that became the ultimate source of political legitimacy (Puga and Trefler, 2014, p. 756).
Counts of 1,100 years run from a first doge in 697. That figure belongs to the chronicle tradition rather than to any surviving record. Venice is one of the very few Italian cities born in the Middle Ages, and almost all the stories about its foundation can be traced to one text, the Istoria Veneticorum, written around the beginning of the eleventh century (Gasparri and Gelichi, 2022, pp. 22, 24). Origins, as the authors of that survey put it, are never a precise point in space and time. They are the result of a process.
This page is the chronology and the institutions that lasted: the Byzantine duchy, the move of power to the Rialto archipelago in the ninth century, the constraints placed on the doge in 1032 and 1172, the election protocol of 1268, the closure of the ruling class between 1297 and 1323, and what the vote of 12 May 1797 actually brought to an end. The ballot mechanics are covered on venice-doge-election and the membership of the chamber on venice-great-council.
Why 697 is a traditional date rather than a documented one
The lagoon was not stably colonised before the fifth or sixth century AD, although it was used and exploited earlier (Gasparri and Gelichi, 2022, p. 24). An archaeological review of the question is blunter: a permanent settlement in the lagoon before the fifth century is a false problem, because the lagoon was not dry land and stable dwellings are attested in almost no case. Where published excavation data exist, at Torcello, San Francesco del Deserto, Olivolo, San Lorenzo di Ammiana and Murano, nothing proves occupation beyond the temporary or the modest before that date (Gelichi, 2010, p. 148).
The dates in circulation come from later writing. The local Venetian era, already in use in medieval and modern Venice, counted from AD 421, the year of the city's legendary birth (Calvelli and Cresci Marrone, 2026, p. 36). The foundation stories themselves are recognisable in the Istoria Veneticorum, written around the start of the eleventh century, roughly six centuries after the events it describes (Gasparri and Gelichi, 2022, p. 24).
What can be dated is the political sequence. At the end of the eighth century a Lombard historian could write that Venice, in his day, was no longer the vast Roman region of Venetia et Histria and now consisted of a few islands (Gasparri and Gelichi, 2022, p. 22). A city of Venice did not yet exist. Who founded Venice is treated at length on who-founded-venice.
From a Byzantine duchy to the city of Rialto
From 553 the region returned to the Roman Empire ruled from Byzantium, and the position changed definitively when the Lombards entered Italy in 569. What emerged was the lagoon Venetia, seat of the Byzantine military command of the northern Adriatic, a duchy under a senior officer holding the rank of magister militum or duke. At that stage one cannot yet speak of a real city of Venice (Gasparri and Gelichi, 2022, p. 22).
The islanders lived first on fishing and salt pans, adding a first phase of commercial development in the Adriatic and on the Po rivers during the eighth century. In 751 Ravenna and the Exarchate fell to the Lombard king Aistulf. Left isolated, the Venetian duchy began to loosen its ties with Byzantium, and in those same years the local community started electing its own dukes. A Frankish occupation followed, and the peace of Aachen in 812 fixed the zones of influence of the two empires, leaving Venice on the Byzantine side (Gasparri and Gelichi, 2022, p. 22).
Only then, in the course of the ninth century, did the first ducal dynasty known to us begin building a real city on the islands of the Rialto archipelago: the church of San Marco, the Ducal Palace and San Zaccaria, which together with San Pietro di Castello, an episcopal see from 776, formed the urban nucleus. Throughout the Middle Ages the place was called the city of Rialto, civitas Rivoalti (Gasparri and Gelichi, 2022, p. 23).
1032 and 1172: the two dates that made Venice a republic
Before 1032 the dogeship had been passed down inside three successive dynasties. The change came after an unpopular doge blocked a church appointment in 1026, sparking a revolt that sent him into exile. A wealthy silk merchant prevailed and became doge in 1032, and most doges over the following centuries were also merchants in long-distance trade. Two de facto constitutional innovations followed: the election of the doge was to be respected in full, so a doge could no longer appoint his successor, and doges were required to consult a two-member ducal court of judges and abide by its decisions (Puga and Trefler, 2014, p. 764).
The second date is 1172, which marks the establishment of a Venetian parliament that became the ultimate source of political legitimacy (Puga and Trefler, 2014, p. 756). Its chamber, the Sala Maggiore of the Doge's Palace, housed an assembly of rich merchants that monitored and constrained most of the doge's activities (p. 754). Many constraints were written into the oath of office that each new doge publicly swore, which listed what he could not do, for example expropriate state property or preside over cases against himself, and the Great Council added to the list at every election. The doge also had to consult a strengthened six-member ducal council elected by and accountable to the Council. By 1192, on the assessment the paper quotes, the doge could do almost nothing without the council's approval (p. 767).
How the doge was elected from 1268 to 1797
In 1268 the Republic adopted an indirect election mechanism that stayed in force until the fall of the Republic in 1797. Voting rights lay with an electoral college, and that college was chosen by a ten-round procedure alternating sortition with qualified majorities. The first round drew thirty members of the Great Council at random from those aged thirty and above (Molinari, 2018, p. 2).
The ten rounds ran as follows: thirty chosen by lot, reduced by lot to nine, who nominated forty each approved by seven of nine, reduced by lot to twelve, who nominated twenty-five each approved by nine of twelve, reduced by lot to nine, who elected forty-five each approved by seven of nine, reduced by lot to eleven, who chose the college of forty-one electors with a majority of nine, and those forty-one elected the doge with a quorum of twenty-five votes (Molinari, 2018, pp. 2, 3). Two rules carried the anti-nepotism intent: no family could hold more than one member in any committee, and a nominee's relatives were forbidden to vote (p. 2).
It narrowed the field less than the design suggests. The seventy-five doges elected under the protocol carried only forty-four surnames between them, and seventy of the seventy-five came from families holding a Great Council seat in 1297 (Mowbray and Gollmann, 2007). The round-by-round mechanics, and the boy who drew the lots, are covered on venice-doge-election.
The Serrata of 1297 to 1323, and what closed with it
During 1297 to 1323, the period known as the Serrata or closure, Venetian politics came under the control of a tightly knit group of the richest families (Puga and Trefler, 2014, p. 756). The same study calls it the most important constitutional event in Venetian history (p. 779). The landmark vote of 28 February 1297 handed control over Great Council elections to the Council of Forty. Anyone who had served in the Council in the previous four years was re-elected automatically provided twelve of the forty votes supported him, while outsiders faced significant obstacles (pp. 783 to 784).
Laws then tightened the closure. In 1310 nobility was defined for the first time, in 1319 the process for electing new members was eliminated, and the last Serrata law of 1323 made membership hereditary (p. 784). The Council more than doubled in size, from an average of 415 members in 1261 to 1296 to around 950 by 1323 (pp. 786 to 787). A revolt on 15 June 1310 led the Council to declare martial law, and the first meeting of the Council of Ten was convened on 10 July 1310 (p. 785).
Economic closure followed within a year of political closure. Commoners took part in 42 per cent of colleganza contracts in 1073 to 1200 and 51 per cent in 1241 to 1261, then 27 per cent in 1310 to 1323, and after 1324 only a single colleganza with commoner participation survives (pp. 790 to 792). The membership arithmetic sits on venice-great-council.
The Arsenale, the galley trade and the families who ran it
Towards the end of the Serrata the state overhauled the galley trade. Instead of convoys of privately owned galleys, Venice moved to publicly owned galleys auctioned to private operators, a system that evolved rapidly between 1321 and 1329, and only nobles were allowed to bid. In 1324, one year after the Serrata was completed, the Capitulare Navigantium forbade any merchant from shipping wares worth more than his assessed wealth, which excluded the poor from long-distance trade (Puga and Trefler, 2014, p. 788).
Nobles then financed the trade inside their own families. A list of 6,959 noble marriages for 1400 to 1599 shows twelve families with at least ten participants and at least one hundred galley shares accounting for half of all the galley trade in shares invested, and the frequency of noble husbands marrying non-noble wives falling from 11.8 per cent in 1400 to 1499 to 7.7 per cent in 1500 to 1599 (pp. 796 to 799). The study's closing judgement is that monopolisation marked the beginning of the end of the Venetian maritime economy (p. 805).
The industrial side outlasted the politics. The Arsenale covers 478,000 square metres and about 20 per cent of the Castello district, employed some 16,000 people at the peak of its efficiency in the early sixteenth century, and built 115 warships between 1660 and 1797 (Camerin, 2024, p. 62). After the unification of 1866 its walled basin became, alongside Taranto, a maritime garrison of the new kingdom (Pierazzo, 2016, p. 84). See venice-arsenale-history.
What 1797 actually ended
On 12 May 1797 the Great Council abdicated in favour of the provisional government. The day was full of tumults, and the sackings and destruction that followed the abdication produced claims for compensation that the new administration was still processing months later (Girardi, 2017, p. 356 and note 32).
What replaced the Republic lasted eight months. The Municipalita provvisoria governed from May 1797 to January 1798, divided into eight committees, and set out to carry a city largely unfamiliar with events in France towards the adoption of revolutionary ideals following the entry of the army of general Bonaparte into Italy (Girardi, 2017, p. 352). One of its bodies, a commission on confiscations under the committee for Finance and the Mint, took the property of a small number of former patricians, all prominent members of the old ruling class, chosen from the procurators, ambassadors and armed forces commanders who had held the highest offices in the Republic's last years (pp. 351, 355).
That experiment failed quickly. On 21 November 1797, a few months after the commission was set up, a deputation appointed to examine the question recommended revoking the confiscations, and the decrees were withdrawn as ineffective and without legal foundation (Girardi, 2017, pp. 351, 359). The old capital then passed between the Habsburg and Napoleonic empires (p. 352). The institutions themselves, the Council, the ducal office and the election protocol of 1268, ended on 12 May and were not restored.
