Carmarthen Priory, now virtually disappeared, was a monastic settlement which pre-dated the Norman Conquest.
The Black Book of Carmarthen, an early Welsh language text, is believed to have been created at the Priory.
[1] A Celtic monastic settlement, Llandeulyddog, existed at Carmarthen prior to the Norman Conquest.
In 1125, however, ownership reverted to the Bishop of St Davids who established an Augustinian priory on the site.
[2] In the late twelfth or early thirteenth centuries, Llyfr Du Caerfyrddin (the Black Book of Carmarthen) was transcribed at the priory.