The Peace of Constance (25 June 1183) was a privilege granted by Frederick I, Holy Roman Emperor, and his son and co-ruler, Henry VI, King of the Romans, to the members of the Lombard League to end the state of rebellion (war) that had been ongoing since 1167. It was a permanent peace that superseded the six-year truce imposed by the Treaty of Venice (22 July 1177).
With the expiration of the truce approaching, negotiations between the emperor and the league were begun in early 1183. There were proposals and counter-proposals, a separate settlement of the disputed status of Alessandria and a preliminary agreement signed at Piacenza. The treaty of Piacenza formed the basis for the final peace, which was issued as an imperial privilege because formally the emperor could not sign a treaty with his subjects.
HistoryLayer draws the world as it was in any year from 123,000 BCE to
2026. Move the slider and the borders redraw for that year; the map
carries 23,890 events, 12,790 people, 837 wars and 13,183 cities, each
one readable in place. Signing in is optional and lets you keep what
you find.