Overview
A guernsey, or gansey, is a seaman's knitted woollen sweater, similar to a jersey, which originated in the Channel Island of the same name, sometimes known as a knit-frock in Cornwall, especially Polperro.
Origins
The guernsey is the mainstay of Guernsey's knitting industry which can be dated back to the late 15th century when a royal grant was obtained to import wool from England and re-export knitted goods to Normandy and Spain. Peter Heylin described the manufacture and export of "waste-cotes" during the reign of Charles I. The first use of the name "guernsey" outside of the island is in the 1851 Oxford Dictionary, but the garment was in use in the bailiwick before that.
The guernsey was traditionally knitted by the fishermen's wives and the pattern passed down from mother to daughter through the generations. While commercially available sweaters are machine knit, the final finishing of these machine-knit parts is completed by hand.
Mary Wright argues that the use and wearing of guernseys throughout the British Isles for over a century and a half almost justifies the guernsey for qualification as a national costume. A guernsey from the Folk Museum Guernsey was included in the 2010 BBC project A History of the World in 100 Objects.
From Wikipedia (CC BY-SA 4.0).