The oath of Pontida (Giurament de Pontida in Lombard, Giuramento di Pontida in Italian), according to tradition, would have been a ceremony that would have sanctioned on 7 April 1167, in the abbey of Pontida, near Bergamo, in Italy, the birth of the Lombard League, or of a military alliance between the municipalities of Milan, Lodi, Ferrara, Piacenza and Parma aimed at the armed struggle against the Holy Roman Empire by Frederick Barbarossa.[1]
The oath of Pontida does not appear on contemporary documents, being mentioned for the first time in 1505, then three and a half centuries after the traditional date of 7 April 1167.[2]