At the same time, the Greeks suffered a defeat at the Battle of Alamana against the army of Omer Vryonis, which resulted in the death of Athanasios Diakos.

But the Ottoman advance was stopped at the inn of Gravia, under the leadership of Odysseas Androutsos, who was subsequently named commander-in-chief of Eastern Greece.

Vryonis turned towards Boeotia and sacked Livadia, awaiting reinforcements before proceeding towards the Morea.

In 15–20 November 1821, a council was held in Salona, where the main local notables and military chiefs participated.

Under the direction of Theodoros Negris, they set down a proto-constitution for the region, the "Legal Order of Eastern Continental Greece" (Νομική Διάταξις της Ανατολικής Χέρσου Ελλάδος), and established a governing council, the Areopagus, composed of 70 notables from eastern Continental Greece as well as the regions of Thessaly and Macedonia, where the Greek uprisings would soon be suppressed.