A by-election was held for the New South Wales Legislative Assembly electorate of Cumberland North Riding on 16 October 1856 because John Darvall had been appointed Solicitor General in the Parker ministry.
|3 October 1856||John Darvall appointed Solicitor-General.|
|3 October 1856||Writ of election issued by the Speaker of the Legislative Assembly.|
|13 October 1856||Nominations|
|16 October 1856||Polling day|
|20 October 1856||Return of writ|
|John Darvall (elected)||560||68.0|
|Total formal votes||824||100.0|
- "Sir John Bayley Darvall MA, QC (1809-1883)". Former Members of the Parliament of New South Wales. Retrieved 16 June 2019.
- "Writ of election: North Riding of Cumberland". New South Wales Government Gazette. No. 152. 4 October 1856. p. 2617. Retrieved 31 August 2020 – via Trove.
- Green, Antony. "October 1856 Cumberland (North Riding) by-election". New South Wales Election Results 1856-2007. Parliament of New South Wales. Retrieved 16 June 2019.