Lachlan Macquarie (pictured) became Governor of New South Wales, eventually playing a major role in the social, economic and architectural development of the colony in Australia.

Major General Lachlan Macquarie, CB was a British Army officer and colonial administrator from Scotland. Macquarie served as the fifth Governor of New South Wales from 1810 to 1821, and had a leading role in the social, economic, and architectural development of the colony. He is considered by historians to have had a crucial influence on the transition of New South Wales from a penal colony to a free settlement and therefore to have played a major role in the shaping of Australian society in the early nineteenth century.

The governor of New South Wales is the representative of the monarch, King Charles III, in the state of New South Wales. In an analogous way to the Governor-General of Australia at the national level, the Governors of the Australian States perform constitutional and ceremonial functions at the state level. The governor is appointed by the monarch on the advice of the Premier of New South Wales, and serves in office for an unfixed period of time—known as serving At His Majesty's pleasure—though five years is the general standard of office term. The current governor is retired judge Margaret Beazley, who succeeded David Hurley on 2 May 2019.