Jonathan Lean - Dean of St. David's Cathedral (2009-2017) Josh Macleod - professional Welsh Rugby Union player (Scarlets) Cerys Matthews - singer, radio presenter and co-founding member of Catatonia (band) Thomas James Stretch - Reverend involved in the liberation of Bergen-Belsen concentration camp in April 1945 Notable former staff David John Williams - Co-founder of Plaid Cymru and prominent Welsh-language writer was an English and PE teacher at the school 1919–1936, and Welsh Master 1937–1945. Glenys Cour - Artist and member of The Welsh Group taught at the school in the 1940s References Bro Gwaun