NPRNTitleType Of SiteRelationNPRN34113TitlePenydarren IronworksType Of Siten/aRelationAssociated withNPRN415115TitlePenydarren Park, Merthyr TydfilType Of Siten/aRelationAssociated withNPRN405522TitlePen-y-Darren, Icehouse, Merthyr TydfilType Of Siten/aRelationAssociated withNPRN301352TitlePenydarren Roman Military SettlementType Of Siten/aRelationAssociated with