Luentinum

[4] The Roman road Sarn Helen, which runs past the Llanio and Llandovery forts was nearby.

The name Luentinum is mentioned in Ptolemy's,[5] 2nd century AD 'Geography', and is thought to relate to washing in reference to the Pumsaint gold mines.

The date of first construction was determined from a Samian ware inkwell with stamp found in the early 1970s where the river bank had cut into the fort.

On the east bank of the River Cothi, a few hundred yards south of Pumsaint village, was discovered a small double-roomed building with hypocaust and plain tessellated floors.

[7] It appears to be related to the Brythonic word for 'washing', as suggested by George Boon of the National Museum of Wales.