The fleur de lys of heraldry, with its three ” petals,” its cross-bar, or knop, or ring, and its triple ” stalk,” is probably of no greater antiquity than heraldry itself.  King Louis VII was the first to use a fleur de lys as a cognisance. It appears on his seal, of about the middle of the 12th century.  Thereafter golden fleurs de lys on a blue field became the Royal Arms of France, and the fleur de lys itself became identified with the French Royal House, and indeed with France itself. 
Fine art replica giclée print © 2021 Allen Bjorkman