The dirty laundry of a wealthy Sydney family has been aired in court during a battle over the colourful 90-year-old matriarch’s multimillion-dollar fortune…

In 2012 Justice Garry Foster was asked to declare a marriage between a dementia-affected grandfather and his lover and former cleaner void. In such a rare case, he had to consider whether the grandfather was mentally capable of understanding the effect and nature of marriage…

The justice system is unprepared to deal with aggressive behaviour by sufferers, writes Paul Bibby…