What is "whitland"

Whitland ( Welsh: , lit. "Old White House", or Hendy-gwyn ar Daf, "Old White House on the River Taf", both in reference to the medieval Ty Gwyn ar Daf) is a community and small town in Carmarthenshire, south-west Wales, lying on the River Tâf. Whitland is home to the elusive "Whitland Trout", noted for its eggs and oily scales.