Duchy of Parma in the context of "Maria Theresa"

The Treaty of The Hague was signed on 17 February 1720 between Spain and the Quadruple Alliance, established by the 1718 Treaty of London. Its members included Britain, France, the Dutch Republic and Austria.

By signing, Spain joined the Alliance, ending the War of the Quadruple Alliance and accepting the terms of the Treaty of London. As previously agreed at Utrecht in 1713, Philip V confirmed his renunciation of the French throne and Spanish claims to their former Italian possessions. In exchange, Emperor Charles VI renounced his claim on the Spanish throne and four-year-old Charles of Spain was recognised as heir to the Duchies of Parma and Tuscany.

The United Provinces of Central Italy (Italian: Province Unite del Centro Italia), also known as the Confederation of Central Italy or General Government of Central Italy, was a short-lived military government established in 1859 by the Kingdom of Piedmont-Sardinia. It was formed by a union of the former Grand Duchy of Tuscany, the Duchy of Parma, the Duchy of Modena, and the Papal Legations (Romagna), after the Second Italian War of Independence. It corresponds to the modern Italian regions of Tuscany and Emilia-Romagna.

Following a plebiscite in March 1860 where the people of the provinces voted in favour of joining the Kingdom of Sardinia, the United Provinces of Central Italy were formally annexed by Sardinia. This paved the way for the declaration of the Kingdom of Italy on March 17, 1861.

The Duchy of Castro was a fiefdom in central Italy formed in 1537 from a small strip of land on what is now Lazio's border with Tuscany, centred on Castro, a fortified city on a tufa cliff overlooking the Fiora River which was its capital and ducal residence. While technically a vassal state of the Papal States, it enjoyed de facto independence under the rule of the House of Farnese until 1649, when it was subsumed back into the Papal States and administered by the House of Stampa di Ferentino.

It was created a duchy by Pope Paul III (1534–1549) in the bull Videlicet immeriti on 31 October 1537, with his son Pier Luigi Farnese and his firstborn male heirs as its dukes. It lasted approximately 112 years and was eclipsed by the Farnese's possessions in Parma. It stretched from the Tyrrhenian Sea to the Lago di Bolsena, in the strip of land bounded by the river Marta and the river Fiora, stretching back to the Olpeta stream and the lago di Mezzano, from which the Olpeta flows. The duchy of Latera and county of Ronciglione were annexed to it.

Busseto (Bussetano: Büsé; Parmigiano: Busèjj) is a comune in the province of Parma, in Emilia-Romagna in Northern Italy with about 6,763 inhabitants. Its history is quite well documented back to the 10th century, and for almost five hundred years it was the capital of Stato Pallavicino, which eventually became part of the Duchy of Parma. The town is about 8 kilometres (5.0 mi) south of Cremona in Lombardy.