Gwinear, Guigner, was a Celtic martyr, one of only two early Cornish saints whose biographies survived the Reformation.

Born in Ireland with the Irish name of Fingar, he was converted to Christianity by Saint Patrick and after spending time in Brittany went with 7 (or 777) companions to Cornwall, landing at Hayle, where he was martyred by King Teudar.

An alternative version sets the story in Brittany with Guigner being martyred at the hands of Prince Tewdwr.

[3] The Victorian clergyman, hagiographer and antiquary Sabine Baring-Gould believed that an Irish group, driven from their homeland in Ossory in the fifth century, invaded Penwith (="pen-gwaeth", the "bloody headland"), and that the legend of Gwinear was a distorted recollection of these events.

This article about a saint from the predecessor states to the United Kingdom is a stub.