Sunday Island lies within the traditional lands of the Brataolong clan of the Gunai nation. European settlers arrived in the area in the early 1840s and the island has a history of being grazed since at least 1860.
Sunday Island's history is intertwined with its indigenous inhabitants, the Gunai people, and their traditional land use practices. The island has been used for grazing since at least 1860, a period marked by European settlers' arrival in the area during the early 1840s.