The Gower dialect refers to the older vocabulary or slang of the Gower Peninsula on the south Wales coast. It was Normanised/Anglicised relatively early after the Norman conquest of England. Relatively cut off from the Welsh hinterland, but with coastal links across south Wales and the West Country, the region developed their distinct English dialect which endured to within living memory.
The Gower Peninsula was geographically insulated from 'mainland' modern language influences until well into the twentieth century. A number of words and pronunciations were recorded during the nineteenth and twentieth centuries as distinct usages in Gower — many of which might once have been widespread but which had fallen out of use in the developing standard English.
Some Gower words seem to derive from the Welsh language (e.g. pentan), but many more of the words and usages are cognate with English country dialects including those of South Devon, Somerset and Wiltshire.
Cyril Gwynn was a Gower poet who used the Gower dialect in his poetry.
Phil Tanner was a Gower singer who used the Gower dialect in his songs, including the Gower Wassail.