Saint Kea was a 5th-century British missionary originating from the Hen Ogledd, the Brythonic-speaking regions of northern England and southern Scotland. According to tradition, he served as a bishop in North Britain before transitioning to a life as a hermit. His missionary work spanned several regions, including Wales, Devon, and Cornwall, before he eventually traveled to Brittany. He is remembered for his spiritual influence across the West Country and his connection to various local religious foundations.