The area was part of the ancient Monmouthshireparish of Mynyddislwyn until the late 19th century. In 1892 a local board of health and local government district of Abercarn was formed.[7] This became Abercarn urban district in 1894, governed by an urban district council of twelve members. Under the Local Government Act 1972 the urban district was abolished in 1974, becoming part of the borough of Islwyn, Gwent. Further local government organisation in 1996 placed the area in the county borough of Caerphilly. The former urban district corresponds to the three communities of Abercarn, Crumlin and Newbridge.
Following the formation of the Territorial Force in 1908, the Abercarn Territorial Cadet Company was formed within the wider Army Cadet Force. Following its formation the company was assigned to the 2nd Battalion, Monmouthshire Regiment. In 1912 the company was affiliated with the new formed 1st Cadet Battalion, The Monmouthshire Regiment.[11]
^Formed as Newbridge local board and local government district on 17 March 1892, renamed Abercarn on 4 July that year. County Census Report 1670, Monmouthshire
^Westlake, Ray. (2011). The Territorials : 1908-1914 : a guide for military and family historians. Barnsley, South Yorkshire: Pen & Sword Books Limited. ISBN9781848843608. OCLC780443267.