After the New Towns Act passed in 1946, the area from north Newport up to Pontypool was identified for the development of a new town — today known as Cwmbran.
Ar ôl i'r Ddeddf Trefi Newydd gael ei phasio ym 1946, nodwyd yr ardal sy’n ymestyn o ogledd Casnewydd hyd at Bont-y-pŵl ar gyfer datblygu tref newydd - a elwir heddiw yn Cwmbrân.