Asaph of Wales
- Hagiography.
- http://www.saintpatrickdc.org/ss/0511.htm#asap

Early British Kingdoms: St. Asaph
- Brief biography of this disciple of St. Kentigern and late 6th century Bishop of Llanelwy in North Wales.
- http://www.earlybritishkingdoms.com/bios/asaphpn.html

Catholic Encyclopedia: St. Asaph
- First bishop of the Welsh town named after him. Second half of sixth century.
- http://www.newadvent.org/cathen/01766a.htm