Uther the Lightbringer

Lord Uther the Lightbringer was the first paladin of the Order of the Silver Hand and subsequent Highlord who lead the Order in battle against the Horde in the Second War and the Scourge during the Third War. During the Third War, Uther was betrayed and murdered by his beloved pupil, Prince Arthas Menethil of the Kingdom of Lordaeron, while defending the urn carrying the ashes of Arthas' father, King Terenas Menethil II. 
Since his death, Uther has been canonized as a saint by the Church of the Holy Light.