Mark Antony Lower,
The Curiosities of Heraldry
“ Warwick, intending to perfect the victory over that part of K. Edward’s army, came up to Oxford, when, the light being dull with mists, rendered Oxford’s badge as big as the king’s, the difference in form and colours being but little; so that Warwick’s men by mistake let fly at those of Oxford. They seeing Warwick’s ragged staff and bear making havock at their backs, whilst they were pressing forward on K. Edward’s sun-beams, not knowing or guessing the cause and Error, cryed out, “Treason! Treason! we are all betrayed.” ”
