The Gallus Church was founded in 885, and in 1123 it was dedicated to John the Baptist. The right to appoint the priest was held by the Baron until 1464, when it went to the Commandry of Tobel. This right remained in Tobel until 1809, when it went to the canton of Thurgau, followed by the municipality in 1830. Originally the parish included the area of the later parishes of Wertbühl (created in 1155) and Weinfelden (created in 1275). In the Late Middle Ages, the parish stretched out over nine lower courts. The chapel at Schönholzerswilen was a filial church of Bussnang. In 1529, the parish was converted to the Reformation by Johannes Zwick, though mass was re-instituted in 1596. The village church remained a shared church until 1935 when the Catholic "Rundkirche" was finished. The sectarian clashes were relieved but not settled with the so-called Rosenbach'schen Treaty of 1639.