2 His own dear mother (ah, why should he so?);
His own dear mother > [Venus]
3 Nor did he spare sometime to prick himself,
sometime > sometimes
4 That he might taste the sweet consuming woe
That > [So that]
5 Which he had wrought to many others more.
to > in
6 But to declare the mournful tragedies, 7 And spoils, wherewith he all the ground did strew:
wherewith > with which ground > surface, background (of the tapestry)