The Fire People — Alexander Cordell

Set in the ironmaking town of Merthyr Tydfil, The Fire People is the
story of Dic Penderyn who in 1831 became the first Welsh Martyr of
the working class.

Hanged for a crime that he did not commit, his story is told in this
powerful novel which describes the events which took place during
the famous Merthyr Tydfil riots of 1831.