Cult leader loses child sex conviction appeal

William Kamm's conviction for sex offences with an underage girl stands.

The crimes occurred in the early 1990s and the NSW Court of Criminal Appeal today dismissed Kamm's appeal against his conviction and his sentence, which he sought to argue was excessive.

Justice David Hodgson said Kamm told his followers of a "prophecy that there would be a new holy era when he would have 12 queens and 72 princesses who would assist in bringing forth his children, who would be called an immaculate race".

The religious leader also wrote a letter to the girl to say she was to be one of his wives, said Justice Hodgson, sitting with justices Michael Grove and Carolyn Simpson.

He is still awaiting sentencing with respect to indecent acts with a different underage girl.