Williams barristers and solicitors  |  121 South Road, Thebarton SA 5031  |  t (08) 8451 9040  |  Email Us

Meet Our Team

Our team of Adelaide lawyers come from a variety of legal backgrounds and contribute valuable skills and knowledge to the firm. Our founding partners are Andrew Williams, Mark Williams and Marie O’Toole – learn about their skills and experience below, or contact us to speak directly with any of our staff members.

Andrew Williams

Andrew Williams lawyer

Andrew is the senior founding partner at Williams Barristers and Solicitors. Most recently a Barrister and Solicitor with a leading criminal defence firm, he brings a wealth of experience to the practice. Andrew holds a LLB/LP (Hons) from Flinders University of South Australia and has been admitted to Practice in the High Court of Australia, the Supreme Court of South Australia and the High Court of Solomon Islands. He is a member of the Legal Services Commission Homicide Panel (Solicitor) and Complex Criminal Law Panel (Counsel & Solicitor) as well as the Law Society of South Australia.

Andrew has previously worked as a Prosecutor with the Office of the Director of Public Prosecutions, an International Legal Adviser to the Solomon Islands Government assisting Restoration of Law and Justice Processes and Institutions following a civil war, and has 22 years experience as a Police Officer. He has also tutored at Flinders University Law School. Andrew’s breadth of experience means you get the benefit of in-depth legal and investigative knowledge, advocacy and negotiation skills. Andrew has focused on defending criminal and traffic matters where provides strong representation for each client.

Call Williams Barristers and Solicitors Adelaide on 08 8451 9040 to make an appointment with Andrew.

Mark Williams

Mark Williams Lawyer

Mark is a founding partner of Williams Barristers and Solicitors. His principal areas of practice include Criminal Law, Traffic Law, Wills and Estates and Family Law. Mark holds a LLB/LP and BIntSt from Flinders University of South Australia and is a member of the Law Society of South Australia and the Legal Services Commission General Panel.

Mark has developed a broad range of skills and knowledge through his work in private firms in Adelaide and through working with the Aboriginal Legal Rights Movement and Office of the Director of Public Prosecutions in the Solomon Islands. Mark has significant experience representing clients for criminal, traffic and family matters in all courts including the Magistrates Court, District Court and Federal Circuit Court. He can also
establish and manage the procedures for Wills, Estates, Power of Attorney, and Advance Care Directives. He is well versed in applications to the Supreme Court for grant of Probate and Letters of Administration.

With his calm, confident and considered approach, Mark will achieve the best possible result for you and your family while always treating you with dignity and respect. Call Williams Barristers and Solicitors Adelaide on 08 8451 7609 to make an appointment with Mark.

Patrick Dawes


Patrick is a Criminal Lawyer at Williams Barristers and Solicitors. Patrick most recently worked for two years as a Senior Judges Associate in the District Court of South Australia. In that role he formed working relationships with each of the Judges and developed an invaluable understanding of their preferences and approaches to the Criminal Law. He uses that inside knowledge to give practical advice and to obtain the best possible outcomes for his clients.

Patrick has a Bachelor of Laws (Hons) and Arts (International Studies) from the University of Adelaide. He is admitted to practice in the Supreme Court of South Australia, is a member of the Law Society of South Australia and is on the Legal Services Commission General Panel. He can help you with your Criminal, Traffic and Wills and Estates Matters.

Patrick applies his strong legal knowledge, work ethic and dedication to all his clients. He is an active listener and will help you and your family tackle your legal issues.

Marie O’Toole

Marie O'Toole

Marie is a founding partner of Williams Barristers and Solicitors.

Marie holds a Dip T, B Ed and M Ed. She brings a range of management expertise to the firm from broad experience in executive positions and educational leadership. As first point of contact in our office, Marie will make sure you are able to quickly access the legal support you need in a friendly and no nonsense manner.

Have you been taken into custody? Call for 24 hr assistance

Call 08 8451 9040