High Quality Content by WIKIPEDIA articles! Batman`s Treaty was a document signed on 6 June 1835 by John Batman, an Australian grazier, businessman and explorer, and a group of Wurundjeri elders, for the purchase of land around Port Phillip, near the present site of the city of Melbourne. The document came to be known as Batman`s Treaty and is also considered significant as it was the first and only documented time when Europeans negotiated their presence and occupation of Aboriginal lands directly with the traditional owners. The so-called treaty was declared void on 26 August 1835 by the Governor of New South Wales, Richard Bourke on the basis that the Wurundjeri people did not have a right to deal with the land, which it was claimed belonged to the Crown.