 A man privy to Guy Fawkes' Gunpowder Plot is said to have lived in the house Ardda'r Myneich (Monks Hill), whose ruins lie in the fields above the road between Porthlwyd and Dolgarrog bridges.Dr Thomas Williams (1550–1622), rector of St Peter's Church, Llanbedr-y-Cennin, was charged with having papist sympathies.He had warned Sir John Wynn of Gwydir to stay away from the Houses of Parliament on that fateful day.