- [S1] John Edward Griffith, Griffith Pedigrees (Date: 1914;)
- [S2] Parish Records, Clwyd FHS Transcriptions (Name: Clwyd Family History Society; Location: Clwyd FHS Research Centre, Cefyn Mawr;)
- [S3] The Church of Jesus Christ of Latter-day Saints, IGI Family Search (Location: Salt Lake City;)
- [S4] Dafydd Hayes, Hayes Index
- [S5] Y Cwtta Cyfarwydd
- [S6] Gwynedd Archives (Location: Caernarfon;)
- [S7] Church of England, Clergy Database (Location: Online;)
- [S8] Llanelian yn Rhos Parish Registers - Burials
- [S9] Nanhoran Estate Papers (Name: Gwynedd Archives; Location: Caernarfon;)
- [S10] Ruyton Xi Towns Parish Records - Baptisms
- [S11] Hatchments at Ryron XI Town St John the Baptist Church