longtom, seven-spot archerfish and the sleepy cod. Two threatened goanna species, Varanus mertensi and Varanus panoptes, are found along the river, as is the vulnerable yellow-snouted gecko (Lucasium occultum). History The traditional owners of the area are the Wulwulam people. The river was named by John McDouall Stuart in 1862. He wrote in his diary "Country burning all round. Lat 13°38'24". This branch I have named the Mary, in honour of Miss Mary Chambers." Stuart always believed that the Mary was a branch of the Adelaide river and always referred to it as "The Mary, Adelaide river". See also List of rivers of Northern Territory References External links Northern Territory Government entry on the Mary River National Park pdf maps of river and environs Rivers of the Northern Territory Arnhem Land