Cerys Matthews is a Welsh singer, songwriter, author, and broadcaster. She was a founding member of Welsh rock band Catatonia and a leading figure in the "Cool Cymru" movement of the late 1990s.

Trefin, formerly anglicised as Trevine, is a village in North Pembrokeshire, south-west Wales. The village lies within the parish and community of Llanrhian, which has a significant Welsh-speaking population.