faithless > heathen chickens > chicks, brood [his soldiers and mercenaries]
8 The fruitful plains and, with fell cruelty,
fell > terrible; fierce
9 In their avenge tread down the victors' surquidry.
avenge > vengeance surquidry > presumption, arrogance
303.47
Yet shall a third both these, and thine subdew;
2 There shall a Lyon from the sea-bord wood
Of Neustria come roring, with a crew
4 Of hungry whelpes, his battailous bold brood,
Whose clawes were newly dipt in cruddy blood,
6 That from the Daniske Tyrants head shall rend
Th'vsurped crowne, as if that he were wood,
8 And the spoile of the countrey conquered
Emongst his young ones shall diuide with bountyhed.
1 "Yet shall a third both these, and yours subdue; 2 There shall a lion from the seaboard wood
a lion > (Meaning William the Conqueror, ruled 1066-1087) seaboard > {Bordering the sea}
3 Of Neustria come roaring, with a crew