Siena, history

...In the early 12th century a self-governing commune replaced the earlier aristocratic government. The consuls who governed the republic slowly became more inclusive of the poblani, or common people, and the Commune increased its territory as the surrounding feudal nobles in their fortified castles submitted to the urban power. Siena's republic, struggling internally between nobles and the popular party, usually worked in political opposition to its great rival, Florence, and was in the 13th century predominantly Ghibelline in opposition to Florence's Guelph position (the backdrop for Dante's Commedia).

On September 4, 1260 The Senese Ghibellines, supported by the forces of King Manfred of Sicily, defeated the Florentine Guelphs at Montaperti. The Senese faced an overwhelming Florentine army. Prior to the battle, the entire city was dedicated to the Virgin Mary and entrusted to her possession – something which has been renewed several times since, most recently in 1944 to guard the city from the threat of Allied bombs. The man given command of Siena for the duration of the war, Bonaguida Lucari, walked barefoot and bareheaded, a halter around his neck, to the Duomo. Leading a procession composed of all the city's residents, he was met by all the clergy. Lucari and the Bishop embraced, to show the unity of church and state, then Luceri formally gave the city and contrade to the Virgin. Legend has it that a thick white cloud descended on the battlefield, giving the Senese cover and aiding their attack. They inflicted a crushing defeat and massacred the forces of their enemy, so crushing was the defeat that even today if the two cities meet in any sporting event, the Senese supporters are likely to exhort their Florentine counterparts to “Remember Montaperti!”.

Siena's university, founded in 1203 and famed for its faculties of law and medicine, is still among the most important Italian universities. Siena rivalled Florence in the arts through the 13th and 14th centuries: the important late medieval painter Duccio di Buoninsegna (1253–1319) was a Senese, but worked across the peninsula, and the mural of "Good Government" by Ambrogio Lorenzetti in the Palazzo Pubblico, or town hall, is a magnificent example of late-Medieval/early Renaissance art as well as a representation of the utopia of urban society as conceived during that period. Siena was devastated by the Black Death of 1348, and also suffered from ill-fated financial enterprises. In 1355, with the arrival of Charles IV of Luxembourg in the city, the population rose and suppressed the government of the Nove (Nine), establishing that Dodici (Twelve) nobles assisted by a council with a popular majority. This was also short-lived, being replaced by the Quindici (Fifteen) reformers in 1385, the Dieci (Ten, 1386-1387), Undici (Eleven, 1388-1398) and Twelve Priors (1398-1399) who, in the end, gave the city's seigniory to Gian Galeazzo Visconti of Milan in order to defend it from the Florentine expansionism.

In 1404 the Visconti were expelled and a government of Ten Priors established, in alliance with Florence against King Ladislas of Naples. With the election of the Senese Pius II as Pope, the Piccolomini and other noble families were allowed to return to the government, but after his death the control returned into popular hands. The noble factions returned in the city under Pandolfo Petrucci in 1487, with the support of Florence and of Alfonso of Calabria; Petrucci exerted an effective rule on the city until his death in 1512, favouring arts and sciences, and defending it from Cesare Borgia. Pandolfo was succeded by his son Borghese, who was ousted by his cousin Raffaello, helped by the Medici Pope Leo X. The last Petrucci was Fabio, exiled in 1523 by the Sienese people. Inner strifes started again, with the popular faction ousting the Noveschi party supported by Clement VII: the latter sent an army, but was defeated at Camollia in 1526. Emperor Charles V took advantage of the chaotic situation to put a Spanish garrison in Siena. This citizen expelled it in 1552, allying with France: this was unacceptable for Charles, who sent his general Gian Giacomo Medici to lay siege to it with a Florentine-Imperial army.

The Sienes government entrusted its defence to Piero Strozzi. When the latter was defeated at the Battle of Marciano (August 1554), any hope of relief was lost. After 18 months of resistance, it surrendered to Florence on April 17, 1555, marking the end of the Republic of Siena. The new Spanish King Philip, owing huge sums to the Medici, ceded it (apart a series of coastal fortress annexed to the State of Presidi) to the Grand Duchy of Tuscany, to which it belonged until the unification of Italy in the 19th century. A Republic government of 700 Sienese families in Montalcino resisted until 1559.

The picturesque city remains an important cultural centre, especially for humanist disciplines.