e of beauty excellent

late > recently (see 301.18-19)
chase > pursuit

6 She left, pursuing that same foster strong;

foster > forester

7 Of whose foul outrage they impatient,

impatient > [being] intolerant

8 And full of fiery zeal, him followed long,
9 To rescue her from shame, and to revenge her wrong.

her > [Florimell, "beautie excellent"]

304.46

Through thick and thin, through mountaines and through plains,
2 Those two great champions did attonce pursew
The fearefull damzell, with incessant paines:
4 Who from them fled, as light-foot hare from vew
Of +hunter+ swift, and sent of houndes trew.
6 At last they came vnto a double way,
Where, doubtfull which to take, her to reskew,
8 Themselues they did dispart, each to assay,
Whether more happie were, to win so goodly pray.

5 hunter > hunters _1609_

1 Through thick and thin, through mountains and through plains,
2 Those two great champions did at once pursue

at once > together

3 The fearful damsel, with incessant pains:

pains > efforts

4 Who from them fled, as lightfoot hare from view

lightfoot > light-footed (also a quasi-sb. name for the hare)

5 Of hunter swift, and scent of hounds true.

scent of > _also, perhaps:_ sent by

6 At last they came to a double way
7 Where, doubtful which to take, her to rescue,
8 Themselves they did dispart, each to assay

dispart > separate
assay > test, put to the proof

9 Whether more happy were, to win so goodly prey.

Whether > Which of the two [champions]
happy > fortunate
so goodly prey > such beautiful plunder; so beautiful a prey

304.47

But _Timias_, the Princes gentle Squire,
2 That Ladies loue vnto his Lord forlent,
And with proud enuy, and indignant ire,
4 After that wicked foster fiercely went.
So beene they three three sundry wayes ybent.
6 But fairest fortune to the Prince befell,
Whose chaunce it was, that soone he did +repent,+
8 To take that way, in which that Damozell
Was fled afore, affraid of him, as feend of hell.

7 repent, > repent _1609_

1 But Timias, the prince's gentle squire,

gentle > gentle; noble
squire > attendant

2 That lady's love to his lord forlent,

forlent > gave up, relinquished (this form not in _OED_)

3 And with proud envy, and indignant ire,

envy > enthusiasm, desire

4 After that wicked foster fiercely went.

foster