 Marjorie Jackson was born in Coffs Harbour, New South Wales, and first gained fame when she defeated reigning Olympic 100 and 200 metres champion Fanny Blankers-Koen a number of times in 1949, thus earning the nickname "the Lithgow Flash", after the New South Wales town of Lithgow where she lived and had grown up.Having won four titles at the 1950 British Empire Games, Jackson came as a favourite to the Helsinki 1952 Summer Olympics.She won both the 100 m, in a then-world-record-equalling time of 11.5, and the 200 m, winning the first Olympic athletics track titles for Australia since Edwin Flack in 1896.