O'Shane described her childhood thus:
We lived in a tent with a dirt floor ... We didn't have running water. I knew that we lived in different circumstances from the other kids at school. I was used to kids calling me black gin and black nigger ... I often had physical fights: black eyes, bloody nose, that kind of thing. By the time I got to secondary school, what I used to do with my fists I started doing with my tongue ... To this day, men tell me that I'm a very aggressive woman.
Gladys O'Shane died suddenly in 1964, leaving Pat to take care of the family.
O'Shane worked as a teacher at Cairns State High School in the 1960s before pursuing a career in law. Students and co-workers from her time at Cairns describe her as "aggressive" and "volatile", however the school's current principal told The Australian that "O'Shane was highly thought of at the school and I have never heard negative comments about her."
In 1976, she became one of the first Aboriginal Australians to become a barrister. Later, she served as the first female head of the New South Wales Ministry of Aboriginal Affairs.
In 1986, the Wran Labor government appointed her as a state magistrate - making her the first Aboriginal Australian to hold such a post.
In 1993, O'Shane was named Chancellor of the University of New England in Armidale. She served in this post until 2003.
The magistrate's six-year-old nephew Tjandamurra O'Shane was set alight in the playground of Cairns North State School in 1996, in a case that attracted a great deal of public sympathy for the family.
In 1998, the National Trust named O'Shane one of Australia's 100 "living treasures".
In 2004, O'Shane learned that Allan Coles, her 77-year-old second husband, had had an extramarital affair with a neighbour, she dumped his belongings on the neighbour's doorstep and kicked Coles out of the house. Coles successfully applied for an apprehended violence order against O'Shane. She received electro-convulsive therapy for manic depression in the wake of the incident.
In 2007 O'Shane was placed on a further apprehended violence order after complaints to police that she was "intimidating and harassing" her ex-husbands lover Heather Armstrong.
One of her staunchest defenders is Lee Rhiannon, who represents the Australian Greens in the New South Wales Legislative Council. "Pat O'Shane has had a distinguished record as barrister, department head and now magistrate," she told The Australian in 2007, "The Government's pursuit of her is a disgrace."
O'Shane's rulings with regard to an attack on two transit officers are to be the subject of proceedings at the New South Wales Judicial Commission. Some have speculated that her career as a magistrate is in jeopardy.
A Sydney Morning Herald article by Janet Albrechtsen on the case was the subject of a defamation action. Judge Rex Smart found that the article implied O'Shane's judgments were influenced by anger and bitterness. Though Smart agreed that O'Shane had been angry at the time of the ruling, he awarded the magistrate $220,000 in damages. This was reduced on appeal to $175,000.
O'Shane's attitudes on the subject of violence against women are opaque, however. In defence of rape accused Geoff Clark, O'Shane told the Nine Network's Sunday programme that "I can tell you on the basis of my experience that a lot of women manufacture a lot of stories against men."
The Court of Appeal found O'Shane's actions to be "wholly inappropriate". Later, the Judicial Commission's Conduct Division, which has the power to refer errant judges to Parliament for dismissal, found in her favour. It was only the third time in its history that the Commission had been asked to rule on a judge's conduct.
O'Shane has engendered the very public hostility of both police and politicians, and the feeling appears to be mutual. In 2001, O'Shane alleged that the New South Wales Police Force "waged a very long campaign against me ... They didn't want me there because of my ideology and my philosophies."
In 2007, Watkins complained to the Judicial Commission about O'Shane, a process that could see the magistrate brought before parliament - and perhaps sacked from her $210,000-a-year job. The minister cited O'Shane's conduct in the Kanaan, Richardson and Rose matters as evidence of bias against law enforcement officials.
She also attacked Noel Pearson, an activist respected on both sides of politics. "His entire outlook on life is in fact white Anglo-Australian," O'Shane has claimed. "He's very clever with the words ... But in my opinion it has no substance."
O'Shane has been a vocal defender of former Aboriginal and Torres Strait Islander Commission chairman Geoff Clark, who has faced numerous allegations of sexual assault.
She was brought before the court where she plead guilty to drink driving. She received a 12 month good behaviour bond, and no conviction was recorded (this occurs with 78 percent of first-time offenders, and is not unusual).
Ms O'Shane has continued working as a magistrate since being charged.