 It was then subject to Rhinegravial ecclesiastical organization.Merzweiler thus belonged first to the parish of Sulzbach, then passing to the parish of Grumbach when this became self-administering in 1808.In Zweibrücken times, the clergyman would hold services during the week at the Merzweiler church, while on Sundays he would hold them at the Kappeln church.