 Baronius asserted that the third canon was not authentic, not in fact decreed by the council.Some medieval Greeks maintained that it did not declare supremacy of the Bishop of Rome, but the primacy; "the first among equals", similar to how they today view the Bishop of Constantinople.Throughout the next several centuries, the Western Church asserted that the Bishop of Rome had supreme authority, and by the time of the Great Schism the Roman Catholic Church based its claim to supremacy on the succession of St. Peter.