2 Fairly to rise, and her adorned head
her adorned head > [Guyon]
3 To prick of highest praise forth to advance,
prick > point; hence: pinnacle
4 Formerly grounded and fast settled
Formerly > First (see also Textual Appendix) fast > firmly
5 On firm foundation of true bountihead;
bountihead > bounteousness; goodness, virtue
6 And this brave knight, that for that virtue fights,
brave > brave; splendid, fine