RAYMOND Dupree has convictions going back to his teenage years and turned his vicious temper on his own family several times before killing Ryan King.
He went to borstal as a teenager and has been to jail several times since for burglary, theft, violence and public order offences.
He once assaulted his sister and has convictions for assaults or making threats on regular occasions since 1962.
The judge at his murder trial ruled that the jury should not hear of his violent past.
He barred his family from telling the jury about how he had behaved, and details of his criminal past only came to light after his latest conviction.