Haines, Gwen. The old church : [Llandanwg]. Country Quest 26/5 (1985), p. 37
Wynne, Ellis. Dauganmlwyddiant Ellis Wynne : llawlyfr y dathliad yn eglwysi Llanfair a Llandanwg, ac yng ngholeg Harlech, Gorffennaf 17, 1934. Aberystwyth : Llyfrgell Genedlaethol Cymru a phwyllgor yr Wyl Goffa, 1934. 26p
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.
Parish statistics; Area 4964 acres; Population 346 males, 403 females, total 749
All the returns for this district (Festiniog) are missing
Harlech Railway Station papers 1916-1968 - details of extant records on Archives Network Wales "Harlech station, was on the Aberystwyth and Welsh Coast Railway, situated between Llandanwg and Tygwyn. Construction began on the railway from 1861, ..............."