 The church at Gretschins was dedicated to Saint Martin in 1494, but the parish adopted the Swiss Reformation at an early time, in the 1520s.Attempts to re-introduced the Catholic mass in 1694/4 resulted in the "Wartau conflict" ("Wartauerhandel"), which almost triggered a larger religious war in the Swiss Confederacy.A second church was built in Azmoos in 1736.