The name "Trellek" derives from the Welsh "llech" meaning a conspicuous stone. It may have referred to a large stone which rested on a mound near the village, perhaps near "Rock Cottage". However the most conspicuous feature in the locality is a line of three standing stones known as Harold's stones, apparently a seventeenth century name. They may also account for the "tri" (meaning three) part of the name, although one would expect the feminine form "tair" to be used as "llech" is feminine (unless it has changed its gender).
