Dymphna is a Christian saint honoured in Catholic and Eastern Orthodox traditions. According to tradition, she lived in the 7th century. She was murdered by her father. The story of Dymphna was first recorded in the 13th century by a canon of the Church of Aubert of Avranches at Cambrai, France. It was commissioned by Guiard of Laon, the Bishop of Cambrai (1238-1248). The author expressly stated that his work was based upon a long-standing oral tradition as well as a persuasive history of miraculous healings of the mentally ill.