Nick Yarris, 51, faced the electric chair after being framed in 1982 for the rape and murder of a woman in his native Pennsylvania.
He now plans to marry 23-year-old Lincolnshire barmaid Jessica Stubley.
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An investigation has started after a fatal house fire in Sheffield.
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John Gogarty was stabbed 69 times by Ian Birley 18 months after he was released from prison on licence following another murder