The harp is the oldest official symbol of Ireland, appearing on coins and documents, though it is most associated with Guinness beer. The shamrock, a three-leaved plant, became a symbol of Ireland after St. Patrick used it to explain the Christian holy trinity. The Irish flag, created in 1848, features green, white and orange bands representing Catholics, unity, and Protestants. The Claddagh ring symbolizes love and friendship within a fishing village in Galway. The Celtic cross combines the Christian cross with the pre-Christian symbol of a circle, representing the blending of old and new beliefs in Ireland.