The "arrogant" teenage son of a high-ranking British Royal Marine has been sentenced to four years after raping a girl at a lavish birthday party at a £3 million house in Cornwall.
George Gray, 19, was this morning beginning his sentence at a young offenders' institution.
His father Colonel Mark Gray MBE, of the Royal Marines, sat in court with other family members to hear sentence passed on his son.
Last month the teenager, a trainee accountant, was found guilty at Truro Crown Court of raping his 17-year-old victim. He was 18 at the time.
The court heard yesterday he suffered from ADHD (Attention Deficit Hyperactivity Disorder).
Judge Mr Justice Burnett told him: "You did come across in the witness box and to a number of witnesses as brash and arrogant.
"But it seems to me that it is only right to recognise this is likely the consequences of the underlying problems with which you have had to cope for some years."
Gray was a pupil at exclusive private Truro School at the time of the attack, which happened on October 29 last year at a house near Truro.
Robert Linford, defending, said his client had a "degree of immaturity".
Mr Linford added: "He tried to 'big himself up' and that came across loud and clear in evidence.
"He continues vehemently to protest his innocence." Before passing sentence Mr Justice Burnett said Gray and the girl had been kissing on a sofa at the party when he asked her to go downstairs to a swimming pool area.
There they kissed again before Gray took her into a cloakroom area.
The judge said: "It is there that you forced yourself on your victim. She remained in pain for many hours afterwards.
"You put your hand over her mouth to stop her crying out."
He said the jury had rejected Gray's claim it had been consensual sex. Mr Justice Burnett added: "The reality is that you wanted to have sex with your victim, quite unable to understand that just because the girl kissed you and agreed to go somewhere private that does not deprive her of the right to say 'no.'
"You have shown no remorse and consider yourself to be a victim in all this.
"But it does reflect credit upon you that you appreciate the very profound consequences for your family."
The judge ordered Gray to sign the Sex Offenders' Register for life.