Calling it "an exceptional case", Judge Peter Kelson QC jailed David Rooke for six-and-a-half years, his son Jamie Rooke for four years and wife Donna Rooke for four months.
Judge Kelson also called it "a wake up call".
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A man in his 70s has been arrested on suspicion of the murder of Elsie Frost more than 50 years ago.
A protest against the treatment of homeless people in Leeds has moved on after participants were issued with a court order yesterday.
Officers are trying to identify and locate a young woman who is believed to have been involved in an attempted abduction in Hull.