1) Historical Celtic people 
The Demetae were a Celtic people of Iron Age Britain who inhabited modern Pembrokeshire and Carmarthenshire in south-west Wales, and gave their name to the county of Dyfed. ==Classical mention== They are mentioned in Ptolemy`s Geographia, as being west of the Silures. He mentions two of their towns, Moridunum (modern Carmarthen) and Luentinum (id....