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Amgueddfa Cymru – Museum Wales
Welsh language ballad, 'Gwialen i Gefn yr Ynfyd' by Edward Jones, a hymn writer from Maes y Plwm. The ballad was written in response to an attack made on Calvinsim by Edward Jones of Llantysilo, who was at that time the editor of 'Yr Eurgrawn Wesleyaidd'.