 The "Letters Patent under the Great Seal of the United Kingdom erecting and establishing the Province of South Australia and fixing the boundaries thereof", short name Letters Patent establishing the Province of South Australia, dated 19 February 1836, was presented to King William IV to formally seek the approval to establish the Province of South Australia.The main change was to amend the wording in the 1834 document which referred to the land as "unoccupied", and offer recognition of the rights of the "Aboriginal Natives" to live unhindered within the lands of the Province of South Australia.The first migrant ship, the "John Pirie", set sail for the colony three days later.