HQ Aberbargoed History Created 1894 Abolished 1974 Succeeded by Islwyn , Rhymney Valley Demography 1901 population 9,988 1971 population 25,338 Bedwellty was a parish and urban district in Monmouthshire , South Wales , until 1974 . The original ancient parish was very large, including most of the upper Ebbw and Sirhowy valleys. A number