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.
Trefriw Parish; Statistics; Area (with Llanrhychwyn parish) 9576 acres; Population (just Trefriw) 214 males, 214 females, total 428
- Trefriw Parish Church "The Church has been for about a century in a most dilapidated and wretched condition and considered by the parishioners not only unfit but highly injurious to their health to attend. The attendance in consequence of this has been very small. The Church is at prsent and has been for the last 12 months undergoing a thorough restoration and is expected to be finished in about 6 weeks ......." W Lewis Walker, Rector
- Nebo, Trefriw, Calvinistic Methodists Erected 15 years ago Attendance - morning 27 scholars, afternoon 27 "The weather was unfavourable this day at our high land place" John Roberts, Manager, Tyddyn Wilym
- Penuel, Trefriw, Welsh Calvinistic Methodist Erected 1815 Attendance - morning 133, afternoon 108 scholars, evening 192 Roger Thomas Rogers, Deacon
- Ebanezer, Trefriw, Independants Erected 1833 Attendance - morning 103 + 63 scholars, afternoon 148, evening 85 "There had began to preach about 60 years ago in this neighbourhood for independants" Henry Jones, Diacon, Tan y Celyn