White Mill is a small village situated just off the A40, on the northern banks of the Tywi river, approximately three miles east of Carmarthen. Just to the west of the village is Merlin's Hill hillfort (NPRN 92889), 'a single massive rampart which crowns a visually distinctive, flat-topped hill, creating a roughly triangular enclosure.' Merlin's Grove Farm is situated between the hillfort and the village. The other large farm nearby has the same name as the village - Whitemill farm - and is situated immediately to its south. Both farms appear on modern and historic OS maps. The first and second editions of the 25inch OS maps, published in 1887 and 1906, show that at the turn of the century White Mill, or Felin-Wen, was a nucleated village centred around its amenities - the White Horse public house; Salem Welsh Independent chapel (NPRN 6212 - recorded as a Baptist chapel on the 25inch maps); a school; a smithy and a corn mill (NPRN 24851).
The village has not expanded much in the twentieth and twenty-first centuries. The school (as a unit of Myrddin School) and the chapel remain open, as does the public house, although it is now known as the White Mill Inn, not the White Horse. Felin-Wen or White Mill is also home to Rees Sound Systems, 'a Production Company that provides Sound, Lighting, Digital Projectors, Plasma Screens, Staging, Generators and Communication Systems to Events and Venues across the country,' and on the A40 there is a 4x4 shop and a petrol station with a small convenience shop.
Sources: modern and historic OS maps; google street view; www.reessound.com
M. Ryder, RCAHMW, 6th December 2018