How dose lady una inspire the red cross knight?

A knight, identified only by the red cross on his shield, accompanies an unnamed lady (later revealed to be Una) across a plain. A storm arises, forcing them to take shelter in a beautiful forest; unfortunately, the forest turns out to be the “Wandering Wood,” where the monster Errour makes her den. Una realizes this and warns Redcrosse not to venture forth, but the knight proceeds anyway and finds himself locked in battle with Errour. Errour gains the advantage by spewing forth vile misinformation at Redcrosse, but Una encourages him to stand firm in his faith. Doing so, Redcrosse is able to gain the upper hand and strangle Errour. He leaves Errour’s body to her foul offspring, who gorge themselves on the body until they burst.