Eurgen, was the mother of Gladys, who married Lleuver Mawr (The Great Light, or Lucius the Great), son of Prince Coel, a king of Britain, baptized at Winchester by his father's first cousin, the younger St. Timothy, who suffered martyrdom at the age of 90 on August 22, 139 A.D. In 170 A.D. Lucius succeeded to the throne of Britain and became the first Christian king in all the world, and the Second Blessed Sovereign of Wales. He built the Cathedral at Llandaff, the first Christian sanctuary in Britain and changed the established religion from Druidism to Christianity. See elsewhere in Vol I. for the ancestry of King Lleuver Mawr.