6 Had not Androgeus, false to native soil, 7 And envious of uncle's sovereignty,

sovereignty > royal authority

8 Betrayed his country to foreign spoil:

spoil > {Act of pillage}

9 Naught else but treason from the first this land did foil.

foil > defeat; trample underfoot; befoul, defile; violate

210.49

So by him C{ae}sar got the victory,
2 Through great bloudshed, and many a sad assay,
In which him selfe was charged heauily
4 Of hardy Nennius, whom he yet did slay,
But lost his sword, yet to be seene this day.
6 Thenceforth this land was tributarie made
T'ambitious Rome, and did their rule obay,
8 Till Arthur all that reckoning +defrayd+;
Yet oft the Briton kings against them strongly swayd.

8 defrayd > did defray 1596, 1609

1 So by him Caesar got the victory, 2 Through great bloodshed, and many a sad assay,