[5][better source needed] Here the soft mutation is entirely regular (occurring when a feminine noun follows the definite article), and it may have spurred the change of Corseinon to Gorseinon.

West Street Bethel Chapel in Masons Road was built as an English Congregationalist church.

These were worked by the monks to provide food and clothing for the Abbey, wool being brought here from Gower sheeplands.

By the end of the thirteenth century the monks at Melyn Mynach owned vast acreage devoted to sheep farming.

With the arrival of the black death and bubonic plague in the fourteenth century, labour became scarce and the monks were forced to sell or rent to the local farmers.

Eventually, during Henry VIII's reign, the few monks that were left were pensioned off, as their land passed into crown hands.

John Pryce, a legal gentleman, who was originally from the area but had moved to London, returned to raise a family at Cwrt Y Carne.

He also owned the Mountain Colliery but sold the Mill after getting into financial difficulties to Mr. William Lewis, the founder of Gorseinon.

It was said that the Bottom Hotel was for miners and the Gyp was for tinplate workers and it was a mortal sin to encroach on another man's territory.

[citation needed] Gorseinon Institute was opened in 1904 and in 1908 the Bryngwyn Sheetworks was opened Prior to local government re-organisation in 1996, the town of Gorseinon was administered as part of the Lliw Valley district and previously Llwchwr Urban District Council.

The council meet at Gorseinon Institute every first Wednesday to discuss local business and planning applications.

Previously, the nearby Bryngwyn steel works and Valeo plant were major employers in the town, however they closed in the 1990s.

Several local charities and organisations are based here, including Gorseinon Development Trust is a locally-run charity that works on issues such as car parking, business, litter, historic areas, tourism and parks in the area.

[7] The town has local hospital, donated to the community prior to the establishment of the National Health Service by the local industrialist, (William) Rufus Lewis, who also established Parc y Werin People's Park [citation needed] Gorseinon has a library, a district housing office and a post office.

For more than 50 years, Gorseinon was home to 'La Charrette', the UK's smallest cinema, established by local electrician, the late Gwyn Phillips.

Built from a disused railway carriage, the cinema opened in 1953; when the decay of its structure forced closure in February 2008, 'La Charrette' was dismantled and taken to the Gower Heritage Centre.

[13] One of the campuses of Gower College Swansea is in Gorseinon, providing further education and adult learning.

It is a conformable boundary in the west, but is assumed to be an unconformable one in the east (Woodland et al., 1957; Squirrell and Downing, 1969; Barclay, 1989).

Description of the upper boundary is The Grovesend Formation is the youngest unit found in the South Wales and Forest of Dean coalfields.

Small outcrop of this formation occurs to East of a fault which has a north–south orientation which is in the penllergaer region of Gorseinon.

Description of the lower boundary of this formation is that the base is placed at the base of the Golden Seam (Swansea Three Feet or Graigola) (Woodland et al., 1957), where the coal rests on mudstone seatearth within a predominantly arenaceous sequence of the Pennant Sandstone Formation.

A large axial plan of an Anticline occurs South of the hospital in Gorseinon with a North West-South East orientation.