I don't think that picture is of the Marshal anyway, the colors are all wrong- he should be in green and gold w/a red lion rampant; by that horse's barding I'd say it was meant to be Richard or John, but the heraldry of the shields in the background as well as the armored man in the foreground suggest a later time set during the Hundred Years' War where the English kings quartered their arms with that of French royalty (the gold fleur de lis on the blue background), which occurred some 120+ years after the Marshal passed. Still, he was The Man of his time.
The second picture is very close if not spot on.