[6] In March 1646, during the English Civil War, Sir Ralph Hopton's Royalist troops camped for two nights within the rings of the fort.
In 1867, Henry Jenner heard a story from an old man at Quoit, near Castle an Dinas, who had seen the ghosts of King Arthur's soldiers drilling there, and remembered the glancing of the moonbeams on their muskets!
This ceremony dates back to pre-Christian times to when Pagans would mark the Summer Solstice In 1671, a man called John Trehenban (pronounced TREM-on) (1650–1671) of St Columb Major, murdered two young girls and was sentenced to imprisonment in a cage on Castle an Dinas, and starved to death.
[10] 23 June 1671 Anne daughter of John Pollard of this Parish and Loveday Rosevear (aged 17), daughter of Thomas Rosevear of St Enoder were barbarously murdered on the day before in the home of Captain Peter Pollard at the bridge by one John Trehenban the son of Humphrey and Cissily Trehenban of this Parish at about 11 O' clock in the forenoon upon a market day.
[13] Other minerals found here include: Arsenopyrite, Cacoxenite, Löllingite, Phlogopite, Topaz Turquoise[14] Castle an Dinas hosted a Cornish wrestling tournament in 2023 where the heavyweight, featherweight, middleweight and ladies championships were decided.