This two-story Georgian building is the Old Northumberland County Courthouse, the oldest still-standing wooden courthouse in the province. Originally located on the King George Highway, it was relocated to 285 Campbell Street in Miramichi in 1914. It was constructed in 1829 by local master builder William Murray as a replacement for the previous courthouse, which had been destroyed in the Miramichi Fire of 1825. A Scottish emigrant, Murray was renown for his high-quality work despite his lack of formal training. As per his usual style, this courthouse is simple and functional yet carefully detailed.

During its period of operation from 1829 to 1914, the courthouse hosted many open poll elections and other events such as church services, concerts, and social gatherings. It was the site of the Fighting Election of 1843, where a riot broke out between opposing voters and at least one person was reportedly killed. Additionally, Fathers of Confederation Hon. Peter Mitchell and Hon. John M. Johnson held debates here pre-Confederation. The court also served as a meeting place for the Newcastle Town Council for 60 years.

This courthouse was the site of a lot of local history, and it is good to know that after a significant move and some cosmetic work the building is still in use today. It is now home to the Miramichi Jaycees.