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| Convention of Milan | |
|---|---|
| Name | Convention of Milan |
| Date signed | 716 |
| Location signed | Milan |
| Parties | Lombards, Byzantine Empire |
| Language | Latin language |
| Type | Treaty |
Convention of Milan
The Convention of Milan was a 716 diplomatic settlement between the Lombards and the Byzantine Empire concluded in the city of Milan during the reigns of King Liutprand and Emperor Philippikos Bardanes. Negotiated amid shifting alliances across Italy, the treaty sought to stabilize contested frontiers after campaigns involving the Exarchate of Ravenna, the duchies of Benevento and Spoleto, and incursions by Avar and Frankish Kingdom forces. The agreement influenced later accords such as the Diploma of Ravenna and foreshadowed interactions among the Frankish Kingdom, Papal States, and regional powers like the Patriarchate of Aquileia.
The settlement emerged from a complex seven-century interplay between the Lombards who established a kingdom in northern and central Italy and the Byzantine Empire maintaining enclaves through the Exarchate of Ravenna and the Theme system. In the early eighth century, King Liutprand consolidated control after campaigns against the duchies of Benevento and Spoleto and incursions linked to the Avars and Slavic peoples. Byzantine authority under Emperor Philippikos Bardanes was distracted by conflicts with the Umayyad Caliphate in the eastern Mediterranean and internal revolts involving the Iconoclasm controversy. Diplomatic pressure from the Papacy in Rome, commercial interests of Ravenna and Venice, and Frankish ambitions under the Carolingian precursors led both capitals to negotiate. Envoys included representatives from the Duchy of Friuli, the Patriarchate of Grado, and merchants from Pavia and Lucca, who raised practical concerns about transit across Alpine routes and the security of the Via Aemilia. The talks in Milan drew on precedents such as treaties between the Visigoths and Eastern Roman Empire and used legal forms familiar from the Codex Justinianus and Lombard customary law codified in the Edictum Rothari.
Signatories listed the principal sovereigns and local magnates: King Liutprand for the Lombards and an imperial placet representing Emperor Philippikos Bardanes, countersigned by the Exarch of Ravenna. Other named parties included the Duke of Benevento, the Duke of Spoleto, the Bishop of Milan, and representatives of the Papal States. The Convention's clauses recognized mutual boundaries along sections of the Po River basin and apportioned control of several fortified sites including Ticinum (Pavia) and certain castles in the Apennines. It stipulated non-aggression agreements, exchange of hostages drawn from the houses of Duke Audelchis and Byzantine officials, and protocols for prisoner exchange modeled on earlier truces between the Ostrogoths and the Eastern Roman Empire. Provisions regulated rights of passage for merchants of Ravenna, Venice, and Genoa along the Via Aemilia and coastal corridors to Ravenna and Classis. The text provided mechanisms for arbitration invoking the Papal Curia or a panel including envoys from Frankish magnates when disputes arose.
Militarily, the Convention dampened immediate frontline skirmishes between Lombard and Byzantine garrisons, allowing redeployment of forces from the Exarchate of Ravenna to eastern theaters confronting the Umayyad Caliphate and Bulgars. It weakened the impetus for Lombard sieges against isolated Byzantine strongholds while bolstering King Liutprand’s capacity to focus on southern consolidation in Benevento. Politically, the pact reshaped alliance networks: the Papal States found a temporary buffer against Byzantine assertiveness, and the Frankish Kingdom recalibrated its posture toward the Italian peninsula. The agreement altered the balance among northern Italian polities such as Pavia, Bergamo, and Como and affected the authority of regional bishops tied to the Patriarchate of Aquileia and Milan’s episcopate. In broader geopolitics, it contributed to the stabilization that enabled subsequent diplomacy culminating in later treaties involving the Carolingian rulers and the Holy Roman Empire’s medieval precursors.
Territorially, the Convention formalized Lombard control over hinterland districts while leaving key Adriatic ports under Byzantine influence, thus creating a patchwork of jurisdictions across the Po Valley and the Apennine slopes. The settlement secured trade corridors for merchants from Ravenna, Venice, Ancona, and Genoa, reducing piracy and banditry that had disrupted commerce since the collapse of centralized Roman authority. Agricultural estates in the Emilia-Romagna and Lombard saltworks near Comacchio saw increased protection, benefiting landholders tied to families like the Anselmi and Rambaldoni. Fiscal provisions addressed customs duties at river crossings and port levies for ships from Byzantium, tempering revenue disputes between the Lombard fisc and Byzantine exchequers influenced by the Imperial Treasury practices. The treaty’s clauses on the restitution of confiscated estates and adjudication of land titles referenced precedents from the Codex Theodosianus and Lombard legal traditions, affecting estate disputes lasting decades.
Contemporaneous responses ranged from relief among urban elites in Ravenna and Pavia to skepticism from militant noble factions in Spoleto and Benevento who favored continued expansion. The Papacy publicly endorsed arbitration mechanisms, while merchants from Venice and Genoa lobbied for clearer navigation rights. Historiographically, later chroniclers in sources such as the Liber Pontificalis and Lombard annals debated the Convention’s durability; modern scholarship situates it as a pivotal step toward the reconfiguration of Italian politics that preceded the Carolingian conquest of northern Italy and the eventual formation of the Holy Roman Empire. Its clauses influenced subsequent treaties and municipal charters in cities like Pavia, Milan’s episcopal registers, and port statutes in Ravenna and Venice, leaving a legacy in diplomatic practice, frontier management, and the interplay among medieval Mediterranean powers.
Category:8th-century treaties