630 631 Who ever gave more honourable prize
prize > prize; plunder
632 To the sweet Muse, than did the martial crew; 633 That their brave deeds she might immortalize
That > [In that]
brave > brave; splendid
634 In her shrill trump, and sound their praises due?
trump > trumpet-note
635 Who then ought more to favour her than you, 636 Most noble lord, the honour of this age, 637 And precedent of all that arms ensue?
precedent > pattern, model
arms ensue > seek after feats of arms; hence: follow a military
career
638 Whose warlike prowess and manly courage, 639 Tempered with reason and advisement sage
advisement > advice; prudence, consideration