There are two other churches dedicated to him, one at Llangollen in North Wales, the other at Langolen near Quimper in Brittany.
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The Four Gospels fitted on the window of the west wall have inscriptions in honour of John James Murley and William Paget.
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As there are no other churches in Wales dedicated to St. Collen, it is possible that this St. Collen may also have connections in both Colan, Cornwall, where Colan Church is dedicated to him, and Langolen, Brittany.