Sts. Peter and Paul Church, the mother church of the Petersburg Parishes, will be commemorated with at State Historical Marker at Petersburg Cemetery. Petersburg Regional Coordinator Rachel Barber requested the marker, which commemorates the church that gave rise to St. Joseph (Wapakoneta), St. John the Evangelist (Fryburg), St. Lawrence (Rhine) and Our Lady of the Immaculate Conception (Botkins). Established in 1835, the parish was dissolved by 1897, the daughter churches having taken its place. A lunch will follow in St. John's…