Italian States Parma 40 Lire Gold Coin of 1815 Marie Louise of Austria

Italy Parma 40 Lire Gold Coin
Italy Parma 40 Lire Gold Coin Empress Marie Louise Napoleon
Duchy of Parma 40 Lire Gold Coin, Marie Louise of Austria (French Empress and 2nd wife of Napoleon), mint year: 1815

Obverse: Diademed bust of Marie Louise of Austria as Duchess of Parma, Piacenza and Guastalla left.
Legend: MARIA LUIGIA PRINC. IMP. ARCID. D' AUSTRIA (privy mark) 1815 (privy mark)

Reverse: Crowne coat of arms of the Duchy of Parma, within order collar.
Legend: PER LA GR . DI DIO DUCH. DI PARMA PIAC. E GUAST. (40 . LIRE )

Mintage: 220,000 only
Mint Place: Milan (Italy)
Reference: KM-32, Friedberg 933. R
Weight: 12.89 gram of Gold (.900)
Diameter: 26 mm

Marie Louise, Duchess of Parma
Marie Louise of Austria (Maria Ludovica Leopoldina Franziska Therese Josepha Lucia von Habsburg-Lothringen; 12 December 1791 – 17 December 1847) was the second wife of Napoleon I, Emperor of the French and later Duchess of Parma. As such, she was Empress of the French from 1810 to 1814, and subsequently ruler of Parma, Piacenza and Guastalla from 1814 until her death.
As the eldest child of Habsburg Emperor Francis I of Austria and his second wife, Maria Theresa of Naples and Sicily, Marie Louise grew up during a period of continuous conflict between Austria and revolutionary France. A series of military defeats at the hands of Napoleon Bonaparte had inflicted a heavy human toll on Austria and led Francis to dissolve the Holy Roman Empire. The end of the War of the Fifth Coalition resulted in the marriage of Napoleon and Marie Louise in 1810, which ushered in a brief period of peace and friendship between Austria and the French Empire. Marie Louise dutifully agreed to the marriage despite being raised to despise France. She was an obedient wife and was adored by Napoleon, who had been eager to marry a member of one of Europe's leading royal houses to cement his relatively young Empire. With Napoleon, she bore a son, styled the King of Rome at birth, later Duke of Reichstaedt, who briefly succeeded him as Napoleon II.
Napoleon's fortunes began to change dramatically in 1812 after his failed invasion of Russia. The European powers, including Austria, resumed hostilities towards France in the War of the Sixth Coalition, which ended with the abdication of Napoleon and his exile to Elba. The 1814 Treaty of Fontainebleau handed over the Duchies of Parma, Piacenza and Guastalla to Empress Marie Louise. She ruled the duchies until her death.
Marie Louise married morganatically twice after Napoleon's death in 1821. Her second husband was Count Adam Albert von Neipperg (married 1821), an equerry she met in 1814. She and Neipperg had three children. After Neipperg's death, she married Count Charles René de Bombelles, her chamberlain, in 1834. Marie Louise died in Parma in 1847.

Duchy of Parma
The Duchy of Parma was created in 1545 from that part of the Duchy of Milan south of the Po River, which had been conquered by the State of the Church in 1512. These territories, centered on the city of Parma, were given as a fief for Pope Paul III's illegitimate son, Pier Luigi Farnese.
In 1556, the second Duke, Ottavio Farnese, was given the city of Piacenza, becoming thus also Duke of Piacenza, and so the state was thereafter properly known as the Duchy of Parma and Piacenza (Italian: Ducato di Parma e Piacenza).
The Farnese family continued to rule until their extinction in 1731, at which point the duchy was inherited by the young son of the King of Spain, Don Charles, whose mother Elizabeth Farnese was the Farnese heiress. He ruled until the end of the War of the Polish Succession in 1735, when Parma was ceded to Emperor Charles VI in exchange for the Two Sicilies.
The Habsburgs only ruled until the conclusion of the Treaty of Aix-la-Chapelle in 1748, when it was ceded back to the Bourbons in the person of Don Philip, Don Charles's younger brother, which received also the little Duchy of Guastalla. As duke Philip, he became the founder of the House of Bourbon-Parma reigning over the Duchy of Parma, Piacenza and Guastalla (Italian: Ducato di Parma, Piacenza e Guastalla).
In 1796, the duchy was occupied by French troops under Napoleon Bonaparte, and the political situation of the State became extremely confused. Duke Ferdinand maintained his throne under French military governors until the Treaty of Aranjuez of 1801, when a general agreement between the House of Bourbon and Napoleon formally decided the cession of the duchy to France in exchange for Tuscany, but the Duke lasted in Parma until he died in 1802, maybe by poisoning. However, Napoleon was undecided about the future of the duchy, aspiring to a total engagement of the Bourbons in the European wars as his allies. Even if French laws and administration was gradually introduced, the formal annexation to the French Empire was declared only in 1808 after the outbreak of the conflict against Bourbonic Spain. The duchy was reformed as the département of Taro.
In 1814, the duchies were restored under Napoleon's Habsburg wife, Marie Louise, who was to rule them for her lifetime. After Marie Louise's death in 1847, the Duchy was restored to the Bourbon-Parma line, which had been ruling the tiny Duchy of Lucca. In this context, Guastalla was ceded to Modena. The Bourbons ruled until 1859, when they were driven out by a revolution following the French and Sardinian victory in the war against Austria (called Austrian War in France and Second War of Independence in Italy).
The Duchy of Parma and Piacenza joined with the Grand Duchy of Tuscany and the Duchy of Modena to form the United Provinces of Central Italy in December 1859, and merged with the Kingdom of Sardinia into the Kingdom of Italy in March 1860 after holding a referendum.
The House of Bourbon continues to claim the title of duke of Parma to this day. Prince Carlos of Bourbon-Parma has held the title since 2010.