Council of Trogg
The Council of Trogg, also called the Council of the Schism, was a reunion of Oswinite clergy in 1520 at the city of Trogg, located in modern-day Varnia. The council sought to reestablish formal communications between the Churches on Arterus and Wallasea, instead resulting in the breakup of the unified Oswinite Church into the Apostolic, Slavonic, and Reformed rites.
Developments in transport provided the Oswinite Church with the opportunity to confer between the Arterian and Wallasean Churches, aiming to minimize the degree of doctrinal differences between the faithful on either continent. Trogg, being the site of Oswin's maiming, was selected to host a pan-Oswinite council seeking to produce a unified doctrine. The Council proved to be polarizing, with the initial dissent arising from the Patriarchate of Ostrava, which demanded a position of privilege in determining Wallasean rites as Ostrava held authority over the territory of Oswin's birth. The Flamaguayan clergy, at this point embracing the Reformist doctrine of salvation by faith, also undermined deliberations.
Ultimately the Patriarchate of Ostrava and the Bishopric of Flamaguay were expelled from the Council, along with the exclusion of any dogmatic endorsement of Oswin's life beyond what was already established in the Verses, failing to resolve any discrepancies in that area. The Apostolic interpretation of the Verses was published at the conclusion of the Council.
The political and religious divisions generated at the council resulted in war between Apostolic, Slavonic, and Reformed polities in Wallasea.