A cairn on the top of the Llanberis Pass in Wales is known as Corffwysfa Pens (the Resting-Place of Saint Pens), and there are traditions of pilgrimage to the hill to pray for the intercession of Saint Pens. However, no information about him has survived.
- Book of Saints, by the Monks of Ramsgate
- Catholic Online
- Kirken i Norge
- Our Sunday Visitor’s Encyclopedia of Saints
- Three Saints, Two Wells and a Welsh Parish, by Tristan Gray Hulse
- “Saint Pens“. Saints.SQPN.com. 10 December 2013. Web. 17 April 2014. <>