7 And her white palfrey, having conquered

palfrey > {Saddle-horse for ladies} conquered > won, got possession of

8 The mastering reins out of her weary wrist, 9 Perforce her carried wherever he thought best.

Perforce > Forcibly; perforce

307.3

So long as breath, and hable puissance
2 Did natiue courage vnto him supply,
His pace he freshly forward did aduaunce,
4 And carried her beyond all ieopardy,
But nought that wanteth rest, can long aby.
6 He hauing through incessant trauell spent
His force, at last perforce a downe did ly,
8 Ne foot could further moue: The Lady gent
Thereat was suddein strooke with great astonishment.

1 So long as breath and able puissance

able puissance > sufficient strength

2 Did native courage to him supply,

native > innate, natural courage > vigour