1 Who, when the shamed shield of slain Sansfoy

shamed > (Because it is placed upside-down: see 104.41:9)

2 He spied with that same Faery champion's page

page > [the dwarf]

3 (Bewraying him that did of late destroy

Bewraying > Revealing, betraying

4 His eldest brother), burning all with rage 5 He to him leapt, and that same envious gage

envious > enviable; also: odious gage > pledge

6 Of victor's glory from him snatched away: 7 But the Elfin knight, which ought that warlike wage,

ought > owned wage > spoil of war