Between 1816 and 1818, while still a convict, Greenway was responsible for the design and construction of the Macquarie Lighthouse on the South Head at the entrance to Port Jackson. After the success of this project he was emancipated by the governor Lachlan Macquarie, and in the role of Acting Civil Architect and Assistant Engineer responsible to Captain J. M. Gill, Inspector of Public Works, went on to build many significant buildings in the new colony.
Greenway’s works include Hyde Park Barracks, the Government House and what is considered to be his masterpiece; St James’ Church, Sydney (chosen as one of Australia’s only two man-made ‘treasures’ by Dan Cruickshank in the BBC series Around the World in 80 Treasures). There are still 49 buildings in central Sydney attributed to Greenway’s designs.
Greenway fell into disrepute when Macquarie accused him of charging high fees whilst on a government retainer, and he was dismissed by the next governor, Thomas Brisbane, in 1822. He continued to follow his profession with little success. Although he got his grant of land, he does not appear to have received the promised cattle.
*All biographical details are taken from Wikipedia for education purposes only.