"ABERTHAW-EAST (ABER-DDAW), a hamlet and sea-port (small), in the parish of PENMARK, hundred of DINASPOWYS, county of GLAMORGAN, SOUTH WALES, 7 miles (S. S. E.) from Cowbridge. The population is returned with the parish. This place is situated on the east bank and near the mouth of the river Ddaw, from which it derives its name, and had formerly a chapel, which has fallen to ruins. The harbour is small, and is only resorted to by a few coasting vessels of inferior burden, for the purpose of conveying the produce of the district to other places, especially lies limestone, called Aberthaw tarras, which is much used in making cement for works under water, canal locks, &c."
"ABERTHAW-WEST (ABER-DDAW), a hamlet and port (small), in the parish of ST-ATHAN, hundred of COWBRIDGE, county of GLAMORGAN, SOUTH WALES, 7 miles (S.S.E.) from Cowbridge. The population is returned with the parish. This place is situated on the western bank of the river Ddaw, opposite the small port of East Aberthaw: near it is Seabreak Point, a promontory which protects the mouth of that river. Lime of excellent quality is procured in the vicinity." [A Topographical Dictionary of Wales by Samuel Lewis 1833 © Mel Lockie 2016]