For All the Saints
- Biographical profile of St. Aidan of Ferns. Variants on the saint's name include: Aedan, Aedh, Maedoc-Edan, and Moedoc. ("Maedoc" means "my dear Aedh").
- http://www.saintpatrickdc.org/ss/0131.htm#aida

St. Aeddan
- Short hagiography of the sixth-century monk.
- http://www.earlybritishkingdoms.com/bios/aeddan.html

Catholic Encyclopedia: St. Maedoc
- St. Maedoc, first bishop of Ferns, d. 626. Feast day 31 January. Also known as St. Aidus, Aeddan Foeddog, Moedhog, Mogue, or Hugh.
- http://www.newadvent.org/cathen/09520a.htm

Catholic Encyclopedia: St. Aedan of Ferns
- St. Aedan of Ferns, also called Aedhog, Moaedhog, or Mogue. First bishop of Ferns. This article says he died in 632.
- http://www.newadvent.org/cathen/01170b.htm