The debate about the Rt Hon Sir Douglas Graham and his knighthood is being mired in misinformation.
There is a relatively recent exactly applicable case where the NZ government stripped a man of his knighthood.
Albert Henry was the first Premier of the Cook Islands from 1965. In 1974 he was made a knight and subsequently stripped of this honour by the New Zealand government (then in charge of honours for the Cooks) after his conviction of a criminal offence.
In the UK last year the former Chief Executive of Royal Bank of Scotland, Fred Goodwin, was stripped of his knighthood he was awarded in 2004 for "services to banking". When that happened he had not been convicted of any criminal offence, he was merely "in disgrace".
What is a matter of greater significance and that has been overlooked is that Sir Douglas Graham was made a member of the Privy Council in 1998. The Privy Council is a a highly esteemed honour among politicians. The Council theoretically advises the Queen, however it it is more honour than substance. Is it appropriate that Right Honourables convicted of criminal offences be members of the Privy Council?