Sir Thomas Mostyn and the Creuddyn Catholics (1587)

Sir Thomas Mostyn and the Creuddyn Catholics


As a Justice of the Peace during the reign of Elizabeth I, Sir Thomas Mostyn (c. 1542 – 1618) was expected to enforce the religious changes of the time, securing the transformation from a Catholic to a Protestant state. In Flintshire he was responsible for dealing with the persistent problem of St. Winifred’s Well in Holywell, the most prominent focus for Catholic resistance in the whole of Wales and north-west England. This survived as a site of pilgrimage throughout the Reformation period. Coincidently, the area around the Gloddaith estate was also a hotbed of Catholicism with much recusant activity focused around the figure of Robert Pue of Penrhyn. In 1587 he and a group of fellow Catholics, including the priest William Davies from Llandrillo-yn-Rhos, were discovered in a cave situated on the Little Orme. Reports suggest that Sir Thomas Mostyn was informed of their activities and went to investigate but would not dare enter the cave, its entrance apparently being too narrow. Instead, he left a watch of twenty loyal men there overnight. By the next morning all the Catholic group had mysteriously disappeared from the cave without the watchmen moving a muscle.

In the cave was discovered panelled walls, an elaborate alter, various weapons and other provisions. The cave had evidently been utilised as a secret chapel. More importantly though, scattered throughout the cave and surrounding area were the remnants of printing tools and script. The printing of Catholic material was illegal and indeed treasonable. The group, it was discovered, had been printing and disseminating a devotional tract called Y Drych Cristianogawl – The Christian Mirror – probably the first book ever printed on Welsh soil. Sir Thomas Mostyn was contemporarily described as ‘a man not very rigid against Catholics’. See:

Sir Thomas Mostyn

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