Of > From, by worship > honour, renown

5 Which I, to prove, this voyage have begun.

prove > test, confirm by personal experience voyage > journey

6 But might I weet of you, right courteous knight,

weet > learn right > very

7 Tidings of one that has to me done 8 Late foul dishonour and reproachful spite,

Late > Lately; recent reproachful > shameful, disgraceful spite > outrage, injury

9 Which I seek to wreak, and Artegall he hight."

wreak > avenge hight > is named

302.9