Northumberland Boroughs was an electoral district of the Legislative Assembly in the Australian state of New South Wales from 1856 to 1859, including the towns of Morpeth, East Maitland, and West Maitland, and named after Northumberland County. It elected two members simultaneously, with voters casting two votes and the first two candidates being elected.
References
Electoral district of Northumberland Boroughs Wikipedia(Text) CC BY-SA