Cowbridge with Llanblethian is a community in the Vale of Glamorgan, Wales, which incorporates Llanblethian and the town of Cowbridge. It also covers the village of Aberthin to the northeast of Cowbridge. The population was 4,063 in 2011.Cowbridge was granted a Royal Charter in 1886 which allowed the population of the community to elect its own councillors and mayor. The first Mayor was Alderman Thomas Rees, in 1887. Currently the Mayor of Cowbridge and Llanblethian is Councillor David Morris.