Trebbia, river, c.70 mi (110 km) long, rising in the Ligurian Apennines, N Italy, and flowing generally NE past Bobbio to join the Po River near Piacenza. Near that city in 218 B.C. Hannibal w...

Gregory X, d. 1276, pope (1271–76), an Italian named Tebaldo Visconti, b. Piacenza; successor of Clement IV. After Clement IV's death the cardinals took 34 months to elect a pope. Gregory was ...

Marie Louise, 1791–1847, empress of the French (1810–15) as consort of Napoleon I and duchess of Parma, Piacenza, and Guastalla (1816–47), daughter of Holy Roman Emperor Francis II (later Empe...

Po, Latin Padus, longest river of Italy, c.405 mi (650 km) long, rising in the Cottian Alps of Piedmont, NW Italy. It winds generally east in a wide valley, past Turin, Pavia, Piacenza, Cremon...

Farnese, Italian noble family that ruled Parma and Piacenza from 1545 to 1731. In the 12th cent. the Farnese held several fiefs in Latium. They became one of the most prominent families in Rom...

Charles III, 1716–88, king of Spain (1759–88) and of Naples and Sicily (1735–59), son of Philip V and Elizabeth Farnese. Recognized as duke of Parma and Piacenza in 1731, he relinquished the d...

Farnese, Alessandro, 1545–92, duke of Parma and Piacenza (1586–92), general and diplomat in the service of Philip II of Spain. He was the son of Duke Ottavio Farnese and Margaret of Parma and ...

Orestes, d. 476, Roman general. With the help of barbarians he deposed (475) the Roman emperor of the West, Julius Nepos, and raised his own son, Romulus Augustulus, to the throne. The next ye...

Emilia-Romagna, region (1991 pop. 3,909,512), 8,542 sq mi (22,124 sq km), N central Italy, bordering on the Adriatic Sea in the east. Bologna is the capital of the region, which is divided int...

Pressburg, Treaty of, 1805, peace treaty between Napoleon I of France and Holy Roman Emperor Francis II (also emperor of Austria), signed at Pressburg (now Bratislava, Slovakia). Defeated at A...