ISMORLAIS (IS-MORLAIS), a hamlet, in the parish of LLANNON, hundred of CARNAWLLON, county of CARMARTHEN, SOUTH WALES, 14 miles (S. E.) from Carmarthen. The population is returned with the parish. A stream named Morlais rises here, and, after passing Llangennech, falls into the Longhor river. The parochial church and village of Llannon are situated within the limits of this hamlet.