Glen Marshall was born 19th June 1926 at Cessnock New South Wales and died at Sea Lake Hospital on 28th February 2015. He was buried in Culgoa Cemetry on 4 March 2015. After working as a ranger in Tasmania, where he raised his children, he obtained a degree in Agricultural Science from Melbourne University, where he also knew Gough Whitlam and Bob Hawke. He spent the years 1960 to 1974 in Papua New Guinea and was Assistant Director of Education from 1962. During this time he became very interested in the religion of the peoples he met there. He came to the conclusion that the primary function of religion was to 'keep a tribe or community together'. He later obtained a Masters degree in theology, and, still later, was employed by the University of Melbourne in a related field. He was named Anzac of the year in 2004.
Whilst in New Guinea, he was a lay preacher and incurred the wrath of Christian missionaries there both for taking indigenous religion seriously and for discussing the rising problem of overpopulation, which he observed had not been a problem before colonial and missionary interference with tribal traditions. He was told to 'keep his hobby to himself' and was so disgusted that he immediately resigned. He told me that he never entered a church again, although he maintained an interest in what he called 'progressive theology'. You can see an interview with him about this period in this video and read a transcript here.