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.
Tref-draeth Parish; Statistics; Area 3135 acres; Population 479 males, 515 females, total 994
- Trefdraeth Parish Church (Diocese of Bangor) Attendance - morning 23 + 26 scholars, afternoon 23 "I do not consider the returns for this parish to be worth much as the Dissenters filled their meeting houses for the occasion from neighbouring Parishes, morning and evening in the different places of Worship, three in number" H D Owen
- Elim Chapel, Wesleyan Methodists Erected 1835 Attendance - morning 30 scholars, afternoon 72, evening 35 Humphrey Jones, Minister, Beaumaris
- Sardis, Welsh Calvinistic Methodist Erected 1834 Attendance - morning 89 scholars, afternoon 134, evening 106 Thomas Jones, Steward, Tyddyn Bottwin, Trefdraeth