Marche
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Pactum Lotharii (840)
The Pactum Lotharii was a treaty between the Duchy of the Venetians and the Holy Roman Empire, or parts thereof, from 840.
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Gregory II — Liber Pontificalis
The Liber Pontificalis for Gregory II (715–731), recounts in great detail the conflicts between the Eastern Roman Empire and the Papacy, with repeated attempts at the life of the pope.