What is "herbrandston"

Herbrandston is a large coastal village (and community) on the north side of the River Cleddau, in southern Pembrokeshire, Wales, to the west of Milford Haven and Hakin and east of St Ishmael's. The village has a population of 1,523, 15% of which is Welsh-speaking. Before 1960 and the building of the ESSO oil refinery, the village only had a population of 200; as infrastructure grew, so did the population. The size of the village increased within a matter of years, as housing estates associated with the refinery were built.