The army of Michael Palaeologus had been annihilated, the army of Frederick Barbarossa had returned to Germany, and the internal rebels against royal authority in Apulia, men like Robert II of Capua or Richard II of Aquila, had either reconciled or been imprisoned.
The papal chancellor, Roland of Siena, later Pope Alexander III, and the Roman nobleman Oddone Frangipane were sent to negotiate.
King William I of Sicily sent his own ammiratus ammiratorum, Maio of Bari, and his two primatial ecclesiastics, Hugh of Palermo and Romuald of Salerno.
One of the chief authors of the treaty as it stands was a young notary named Matthew of Ajello,[4] later of much fame in Sicily.
The kingship of William was recognised over all Sicily, Apulia, Calabria, and Campania, as well as Capua, the coastal cities of Amalfi, Naples, and Gaeta,[1] and even the newly conquered territories in the Marchia (i.e.