xAlison Chapman (ed.) and the DVPP team, “Inscription for the Apartment in Chepstow Castle Where Henry Martin, the Regicide,
Was Imprisoned Thirty Years,” Digital Victorian Periodical Poetry Project, Edition 0.98.9beta, University of Victoria, 18th March 2024, https://dvpp.uvic.ca/cornhill_series/1898/pom_15895_inscription_for_the_apartment.html.