Pisa is a city and comune (municipality) in Tuscany, central Italy, straddling the Arno just before it empties into the Ligurian Sea. It is the capital city of the Province of Pisa. Although Pisa is known worldwide for its leaning tower, the city contains more than twenty other historic churches, several medieval palaces, and bridges across the Arno. Much of the city's architecture was financed from its history as one of the Italian maritime republics.
The Guelphs and Ghibellines were factions supporting respectively the Pope and the Holy Roman Emperor in the Italian city-states of Central Italy and Northern Italy during the Middle Ages.
The Battle of Cortenuova was fought on 27 November 1237 in the course of the Guelphs and Ghibellines Wars: in it, Holy Roman Emperor Frederick II defeated the Second Lombard League.
William of Modena, also known as William of Sabina, Guglielmo de Chartreaux, Guglielmo de Savoy, Guillelmus, was an Italian clergyman and papal diplomat. He was frequently appointed a legate, or papal ambassador by the popes Honorius III and Gregory IX, especially in Livonia in the 1220s and in the Prussian questions of the 1240s. Eventually he resigned his see to devote himself to these diplomatic issues. On 28 May 1244 he was created Cardinal-Bishop of Sabina by Pope Innocent IV. For a short time (1219–1222) he served also as Vice-Chancellor of the Holy Roman Church.
Enzo was an illegitimate son of the Hohenstaufen emperor Frederick II, who appointed him 'King of Sardinia' in 1238. He played a major role in the wars between Guelphs and Ghibellines in the Imperial kingdom of Italy, and was captured by his enemies in 1249. He remained imprisoned in Bologna until his death.
The Battle of Curzola was a naval battle fought on 9 September 1298 between the Genoese and Venetian navies. It was a disaster for Venice, a major setback among the many battles fought in the 13th and 14th centuries between Pisa, Genoa, and Venice in a long series of wars for the control of Mediterranean and Levantine trade.
The siege of Faenza occurred from August 1240 to April 14, 1241, during the course of the wars of the Guelphs and the Ghibellines. In this military confrontation, the Holy Roman Emperor Frederick II aggressively laid siege to the town of Faenza and successfully captured the city.
The Battle of Parma was fought on 18 February 1248 between the forces of Holy Roman Emperor Frederick II and the Lombard League. The Guelphs attacked the Imperial camp when Frederick II was away. The Imperial forces were defeated and much of Frederick's treasure was lost.
The Battle of Meloria was fought near the islet of Meloria in the Ligurian Sea on 5 and 6 August 1284 between the fleets of the Republics of Genoa and Pisa as part of the Genoese-Pisan War. The victory of Genoa and the destruction of the Pisan fleet marked the decline of the Republic of Pisa.
The maritime republics, also called merchant republics, were Italian thalassocratic port cities which, starting from the Middle Ages, enjoyed political autonomy and economic prosperity brought about by their maritime activities. The term, coined during the 19th century, generally refers to four Italian cities, whose coats of arms have been shown since 1947 on the flags of the Italian Navy and the Italian Merchant Navy: Amalfi, Genoa, Pisa, and Venice. In addition to the four best known cities, Ancona, Gaeta, Noli, and, in Dalmatia, Ragusa, are also considered maritime republics; in certain historical periods, they had no secondary importance compared to some of the better known cities.
The Judicate of Gallura was one of four Sardinian judicates in the Middle Ages. These were independent states whose rulers bore the title iudex, judge. Gallura, a name which comes from gallus, meaning rooster (cock), was subdivided into ten curatoriae governed by curatores under the judge. In the 13th century, the arms of Gallura contained a rooster.
The history of Corsica in the medieval period begins with the collapse of the Western Roman Empire and the invasions of various Germanic peoples in the fifth century AD, and ends with the complete subjection of the island to the authority of the Bank of San Giorgio in 1511.
Otto of Tonengo was an Italian papal diplomat and cardinal, first as deacon of San Nicola in Carcere from 1227 and then as bishop of Porto e Santa Rufina from 1244.
The 1241 papal election saw the election of Cardinal Goffredo da Castiglione as Pope Celestine IV. The election took place during the first of many protracted sede vacantes of the Middle Ages, and like many of them was characterized by disputes between popes and the Holy Roman Emperor. Specifically, the election took place during the war between Frederick II, Holy Roman Emperor and the Lombard League and deceased pontiff, Pope Gregory IX, with Italy divided between pro-Papal and pro-Imperial factions known as the Guelphs and Ghibellines.
An incomplete list of events in Italy in 1241:
In 1015 and again in 1016, the forces of Mujāhid al-ʿĀmirī from the taifa of Denia and the Balearics, in the east of Muslim Spain (al-Andalus), attacked Sardinia and attempted to establish control over it. In both these years joint expeditions from the maritime republics of Pisa and Genoa repelled the invaders. These Pisan–Genoese expeditions to Sardinia were approved and supported by the Papacy in aid of the sovereign Sardinian medieval kingdoms, known as Judicates, which resisted autonomously after the collapse of the Byzantine rule on the island. and modern historians often see them as proto-Crusades. After their victory, the Italian cities turned on each other. For this reason, the Christian sources for the expedition are primarily from Pisa, which celebrated its double victory over the Muslims and the Genoese with an inscription on the walls of its Duomo.
Alamanno da Costa was a Genoese admiral. He became the count of Syracuse in the Kingdom of Sicily, and led naval expeditions throughout the eastern Mediterranean. He was an important figure in Genoa's longstanding conflict with Pisa and in the origin of its conflict with Venice. The historian Ernst Kantorowicz called him a "famous prince of pirates".
The Genoese navy was the naval contingent of the Republic of Genoa's military. From the 11th century onward the Genoese navy protected the interests of the republic and projected its power throughout the Mediterranean and Black Seas. It played a crucial role in the history of the republic as a thalassocracy and a maritime trading power.
James of Pecorara or Giacomo da Pecorara was an Italian monk, cardinal and diplomat.
Simone Guercio was a Genoese noble and military commander and official in the service of the Republic of Genoa during the third quarter of the 13th century.
