Affoltern im Emmental is a municipality in the district of Trachselwald in the canton of Bern in Switzerland. Affoltern is first mentioned in 1261/63 …Affoltern im Emmental is a municipality in the district of Trachselwald in the canton of Bern in Switzerland. Affoltern is first mentioned in 1261/63 as Affolterra. The oldest trace of a settlement in the area comes from the Middle Ages. The village church of St. Michael was first mentioned in 1275. It remained a local chapel until 1484 when Teutonic Knights Commandry of Sumiswald provided funding for a permanent parish priest. In 1528 Bern adopted the new faith of the Protestant Reformation and Affoltern converted. However, the Commandry retained patronage rights over the church until 1698.