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.
Ceidio Parish; Statistics; Area 1081 acres; Population 83 males, 77 females, total 160
Ceidio Chapel of Ease Attendance - usual - morning 20 Service in Welsh Lewis Parry
Penuel, Independent Erected 1823 Attendance - morning 56 scholars, afternoon 112, evening 80 Robert Roberts, Minister
Rees, Thomas & John Thomas. Hanes Eglwysi Annibynnol Cymru (History of the Welsh Independent Churches), 4 volumes (published 1871+). Here is the entry from this book for Ceidio chapel (in Welsh ) - with translation by Eleri Rowlands (March 2011)
CEIDIO, a parish in the hundred of DINLLAEN, county of CARNARVON, NORTH WALES; 6 miles (W.N. W) from Pwllheli, containing 135 inhabitants. The soil on the higher grounds is sandy, and the lower grounds are composed chiefly of turbaries. The living is a perpetual curacy, in the archdeaconry and diocese of Bangor, endowed with £200 private benefaction, £1400 royal bounty, and £ 600 parliamentary grant, and in the patronage of T. P. Jones Parry, Esq. Previously to the above endowments, the minister's stipend was only £ 5 per annum, which small sum was the bequest of Owen Hughes, of Madryn, Esq. The, church, dedicated to St. Ceidio, and situated on an eminence, is a small neat building, kept in excellent repair. A singular custom of dispensing altogether with the appointment of churchwardens prevails in this parish. An average annual expenditure amounting to £82 is applied for the support of the poor. ( A Topographical Dictionary of Wales by Samuel Lewis, 1833)