"1806-12-11Z"^^ . "Roberts, W.P."@en . "1871-09-07Z"^^ . . "W. P. Roberts (1806\u20131871) was a noted Chartist who became known as the \"attorney-general\" of the coal miners in the 1840s."@en . "William Prowting Roberts"@en . . "1871Z"^^ . "Lawyer/Chartist" . "1806Z"^^ . .