 Warfare erupted in 1261 as the Oeselians once more renounced Christianity and killed all the Germans on the island.A peace treaty was signed after the united forces of the Livonian Order, the Bishopric of Ösel-Wiek, and Danish Estonia, including mainland Estonians and Latvians, defeated the Oeselians by capturing their stronghold at Kaarma.Soon thereafter, the Livonian Order established a stone fort at Pöide.