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.
Llanaelhaiarn Parish; Statistics; Area 6698 acres; Population 317 males, 299 females, total 616
- Llanaelhaiarn Parish Church "One of the oldest Churches in the Kingdom" Attendance - morning 37 Services in Welsh "The Evening service does not commence till Easter, being discontinued during the depth of winter......" J Williams Ellis, Rector
- Cwmcoryn, Calvinistic Methodist Erected 1811 Attendance - morning 81, afternoon 66 scholars, evening 62 Robert Hughes, Minister, Uwchlawrffynnon, nr Clynnog
- Pentref Chapel, General Baptists Erected 1815 Attendance - morning 34, afternoon 50 scholars, evening 98 Evan Jones, Deacon, Ty'n lon las, Pwllheli
- Bethlehem, Independent Erected 1813 Attendance - morning 95, afternoon 84 scholars, evening 93 "There is no minister taking charge of the Chapel of Bethleham at present, but there is a sermon or two preached in the Chapel every Sunday by some of the Independent Ministers" John H Jones, Deacon, Morfa, nr Clynnog