1 It fortuned, as they devised had,
devised > conjectured, surmised
2 The gentle squire came riding that same way,
gentle > noble
3 Unweeting of their wile and treason bad,
Unweeting > Ignorant wile > deceitfulness, cunning
4 And through the ford to pass did essay;
essay > try
5 But that fierce foster, which late fled away,
late > recently