2 Because of travel long, a nigher way,

nigher > nearer; hence: shorter

3 With a strong guard, all rescue to prevent, 4 And her to Faery court safe to convey, 5 That her for witness of his hard assay,

That > [So that] witness > knowledge, understanding; testimony assay > trial, tribulation; endeavour

6 To his Faery Queen he might present: 7 But he himself betook another way,

betook > took

8 To make more trial of his hardiment,

hardiment > hardihood, boldness

9 And seek adventures, as he with Prince Arthur went.

301.3