became the name of a nearby village. Mathern was originally known as Merthyr-Tewdrig ("burial-place of Tewdrig"), after the martyrdom of St. Tewdrig , king of Gwent and Glywysing . According to the Book of Llandaff , Tewdrig (or Tewdric) was wounded at Tintern around the year 630 , after fighting the