Neustria > (The western kingdom of the Franks, extending from the mouth of the Schelde to the Loire; later developed into the kingdom of France; hence, here, = "France")
4 Of hungry whelps, his battailous bold brood,
battailous > warlike
5 Whose claws were newly dipped in cruddy blood,
cruddy > clotted
6 That from the Danish tyrant's head shall rend 7 The usurped crown, as if he were wood,
wood > mad
8 And the spoil of the country conquered
country conquered > [conquered country]
9 Amongst his young ones shall divide with bountihead.