 The flag is the banner of the arms anachronistically attributed to Edwin, ruler of the former kingdom of Tegeingl that covered much of the territory of Flintshire.Those arms bore a black engrailed fleury cross (i.e.a cross capped with fleur-de-lis ends and "scalloped" edges) on a white field between four choughs, a bird once likely to have been widespread in the area, in black and red.