Little Andrew Morton's family say his killer has never shown remorse.
Mark Bonini's bid was knocked back by the parole board earlier this month, who recommended he should stay locked up.
Bonini was ordered to serve at least 13 years before he could apply for parole after being sentenced at the High Court in Glasgow in August 2005. Sharon, 51, said : "He murdered a child, little more than a baby. He should have got at least 25 years and even then he should have had to show remorse before getting out."
The couple, who have six more children, will request the Parole Board for Scotland use new powers to stop Bonini moving back to Garthamlock when he is finally released.
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