John Graham Knatchbull was a Royal Navy officer who served in the French Revolutionary and Napoleonic Wars. He later became a convict who was transported to New South Wales in 1824, where Knatchbull was convicted of murder in January 1844 and executed in Sydney.
- Citizenship
- Kingdom of Great Britain, United Kingdom of Great Britain and Ireland
- Born
- 1791
- Died
- February 13, 1844
