St David's Day is celebrated in Wales on 1 March, in honour of Dewi Sant or St David, the patron saint of Wales. Little is known about him for certain. What little information we have is based on an account of his life written by Rhigyfarch towards the end of the 11th century. According to this Latin manuscript, Dewi died in the year 589. His mother was called Non, and his father, Sant, was the son of Ceredig, King of Ceredigion. After being educated in Cardiganshire, he went on pilgrimage through south Wales and the west of England, where it is said that he founded religious centres such as Glastonbury and Croyland. He even went on a pilgrimage to Jerusalem, where he was made archbishop.