Anthony Slater, who runs the community charity OSCAR, said the community had raised £10,800 to date for the funerals of six children who were killed in an arson attack on their home.
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Michael Danaher, 50, killed historian and book dealer Adrian Greenwood at his home over a £50,000 first edition copy of Wind In The Willows.
The former Cardiff South and Penarth parliamentary candidate joins Suzanne Evans, Paul Nuttall and Raheem Kassam in the race.
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