Church and chapel data from The Religious census of 1851 : A Calendar of the returns relating to Wales, Vol 11, North Wales. Ed. by Ieuan Gwynedd Jones, UWP, 1981. The names given towards the end of each entry are those of the informants.
Trewalchmai Parochial Chapelry; Statistics; Area 1700 acres; Population 369 males, 406 females, total 775
- Trewalchmai Parochial Chapel (Diocese of Bangor) Attendance - morningn 34 +15 scholars William Evans, Curate
- Moriah, Independents Erected 1847 Attendance - morning 50 scholars, afternoon 103, evening 63 Edward Williams, Deacon, Shoemaker
- Gwalchmai Chapel, Calvinistic Methodists Erected before 1800, rebuilt 1849 Attendance - morning 306, afternoon 245 scholars, evening 600 Owen Thomas, Elder, Shop, Gwalchmai