Complex sentence: Marcus Richard Einfeld AO QC (born 22 September 1939) is an Australian lawyer, judge and social activist who served as a Justice of the Federal Court of Australia and the Supreme Courts of New South Wales, Western Australia and the Australian Capital Territory.
Split into simpler sentences: Marcus Richard Einfeld AO QC (born 22 September 1939) is an Australian lawyer, judge and social activist. Einfeld is a former Justice of the Federal Court of Australia and of the Supreme Court of New South Wales, the Supreme Court of Western Australia and the the Supreme Court of the Australian Capital Territory.