Requested by ElderMike–and I know he likes the Irish Rovers, so here we go: Good King Wenceslaus, by the Irish Rovers.
Historical note: Wenceslaus was Duke of Bohemia in the 10th century, famous for his piety and good works. After death, he was recognized as St. Wenceslaus and promoted posthumously to king by the Pope, in recognition of his unfailing charity. He was murdered and martyred in 935 A.D. by his brother, Boleslaus the Cruel.