Trebbia (trĕb´byä), 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 BC Hannibal won a decisive victory over the Romans. In 1799 the Trebbia was the scene of a Russo-Austrian victory over the French.
"Trebbia." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (November 21, 2018). https://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/trebbia
"Trebbia." The Columbia Encyclopedia, 6th ed.. . Retrieved November 21, 2018 from Encyclopedia.com: https://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/trebbia