There's a 19th c stone circle (the rocking stone, Pontypridd) to go with this "make believe artist" though I noticed a Chief Constable is the latest bard... its in "Gathering the Jewels" hopefully the link works.
Thanks moss, the link does work (fascinating site) and I noticed another lovely old photo (1880s) of the Rocking Stone at - http://www.gtj.org.uk/en/subjects/2018