7 And did themselves through all the north display:

display > spread out

8 Until Locrin, for his realm's defence, 9 Did head against them make, and strong munifience.

head > headway; advance munifience > fortification, defence (WU)

210.16

He them encountred, a confused rout,
2 Foreby the Riuer, that whylome was hight
The auncient Abus, where with courage stout
4 He them defeated in victorious fight,
And chaste so fiercely after fearefull flight,
6 That forst their Chieftaine, for his safeties sake,
(Their Chieftaine Humber named was aright)
8 Vnto the mightie streame him to betake,
Where he an end of battell, and of life did make.

1 He them encountered, a confused rout, 2 Forby the river that whilom was hight

Forby > Hard by, near whilom > formerly hight > called (it is now called the River Humber)

3 The ancient Abus, where with courage stout

stout > bold, brave