The father from the Roscommon “house of horrors” case will on Friday begin an appeal against his conviction and 14-year sentence.
The appeal by the 57-year-old, who was convicted in 2010 for the systematic sexual abuse of his eldest son over a three-year period, is listed for hearing before the Court of Criminal Appeal.
The court will hear a full appeal against conviction and severity of sentence.
The father had pleaded not guilty to 47 counts of the rape and sexual assault of his son, when the boy was aged between 12 and 15 years old.
Despite being found guilty by a jury, he has continued to claim that he is innocent.
Passing sentence on March 8th, 2010, Mr Justice Barry White jailed him for 14 years, but suspended the final 18 months of the sentence.
The man’s wife was jailed in January 2009 for the maximum term of seven years for incest, other sexual abuse, neglect and wilful ill-treatment of her six children at the family home in Co Roscommon, dubbed the “house of horrors”.
She had pleaded guilty to 10 charges including forcing her 13-year-old son to have sex with her.
She was freed in April of last year after serving five years at the Dóchas women’s prison in Dublin. She had a quarter of her sentence reduced for good behaviour.
The couple cannot be identified to protect the identity of their victims.