What is "trefasser"

Trefasser (variations: Tref-Asser, or Trêf Asser, or Asserton; translation: "town" of "Asser") is a hamlet, located to the west of Fishguard and south of Pwll Deri in western Wales. Historically, it is part of the parish of Llanwnda. It lies on the coast of St George's Channel within the Pembrokeshire Coast National Park. A stream named Cledde Goch runs close by.

Trefasser's farms, houses and cottages are the only settled area of Pen Caer. David Tress has painted the place in an abstract painting.