The flag on the Union Jack Visa Gift Card is fraught with historical significance. When Elizabeth I died childless in 1603, the next heir to the throne was her cousin, James VI of St. Andrew. The flag represents the union of England (the red horizontal and vertical cross , Scotland (the white diagonal cross on blue) and Ireland (red diagonal cross on white field). The derivation of the “jack” part is less certain. Some say it is short for Jacobus, the Latin form of James, while another story attributes it to a small version of the union jack flown on the bowsprit of ships of the realm, called the jack flag. Celebrate the United Kingdom with Union Jack Visa Gift Cards.