Campbell was born in Blackwatertown, County Armagh, the only child of schoolteacher Daniel (c.1830-1902), and Mary Campbell.[3][4] In the 1890s he studied at the Royal University of Ireland, and he was called to the bar by the Middle Temple in January 1896.[5]
Little else is currently known about Campbell after his decision to stand down as an MP. He was a lifelong bachelor, and had no children. In June 1910 he was injured after being struck by a taxicab on Charing Cross Road in London.[8] His last known mention in print was his attendance of a wedding in Fulham in November 1926.[9]
References
^Ireland, Select Births and Baptisms, 1620-1911: John Campbell
^"Archived copy". Archived from the original on 20 October 2018. Retrieved 11 October 2010.{{cite web}}: CS1 maint: archived copy as title (link)