Cesena is a city in Emilia-Romagna, once part of the Byzantine duchy of the Pentapolis, then of the Papal State.
The Pactum Lotharii was a treaty between the Duchy of the Venetians and the Holy Roman Empire, or parts thereof, from 840.
An excerpt of the “Liber Pontificalis” for Pope Zachary about Lombard attacks on Ravenna around 742.